All Haskell Answers
- what is the monomorphism restriction?
- what is the difference between . (dot) and $ (dollar sign)?
- better exception for non-exhaustive patterns in case
- why shouldn't i mix tabs and spaces?
- getting started with haskell
- deploying yesod to heroku, can't build statically
- how to group similar items in a list using haskell?
- what is weak head normal form?
- good examples of not a functor/functor/applicative/monad?
- how to create a polyvariadic haskell function?
- what does (f .) . g mean in haskell?
- is there a haskell idiom for updating a nested data structure?
- :sprint for polymorphic values?
- speed comparison with project euler: c vs python vs erlang vs haskell
- lenses, fclabels, data-accessor - which library for structure access and mutation is better
- why is the minimalist, example haskell quicksort not a “true” quicksort?
- what's so bad about lazy i/o?
- multi-line commands in ghci
- memoization in haskell?
- what does the “@” symbol mean in reference to lists in haskell?
- what is haskell's stream fusion
- haskell foldl' poor performance with (++)
- how do i deal with many levels of indentation?
- a monad is just a monoid in the category of endofunctors, what's the problem?
- foldl versus foldr behavior with infinite lists
- what is the purpose of rank2types?
- small haskell program compiled with ghc into huge binary
- what are paramorphisms?
- find the longest common starting substring in a set of strings [closed]
- confused by the meaning of the 'alternative' type class and its relationship to other type classes
- equal (=) vs left arrow (<-) symbols in haskell
- haskell types frustrating a simple 'average' function
- using return vs. not using return in the list monad
- datatypecontexts deprecated in latest ghc: why?
- what's the “|” for in a haskell class definition?
- how to extract value from monadic action
- is monad bind (>>=) operator closer to function composition (chaining) or function application?
- why does length return 1 for a tuple with 2 elements, and gives an error for a tuple with more elements?
- positive integer type
- double stream feed to prevent unneeded memoization?
- how can i poll files, sockets or handles to become readable/writable in haskell?
- what are free monads?
- large-scale design in haskell? [closed]
- what are some compelling use cases for dependent method types?
- what is indexed monad?
- how do you represent a graph in haskell?
- how do i use fix, and how does it work?
- splitting list into a list of possible tuples
- does haskell have tail-recursive optimization?
- explain this chunk of haskell code that outputs a stream of primes
- haskell ranges and floats
- applicatives compose, monads don't
- how is this fibonacci-function memoized?
- monads with join() instead of bind()
- how do i define lisp’s apply in haskell?
- how to define a function in ghci across multiple lines?
- why are difference lists more efficient than regular concatenation in haskell?
- runst and function composition
- reading ghc core
- defining a function by equations with different number of arguments
- writing foldl using foldr
- concrete example showing that monads are not closed under composition (with proof)?
- haskell function composition (.) and function application ($) idioms: correct use
- how to use (->) instances of monad and confusion about (->)
- explicitly import instances
- non exhaustive pattern in function in ghci
- difference between `data` and `newtype` in haskell
- foldl is tail recursive, so how come foldr runs faster than foldl?
- scala: how to define “generic” function parameters?
- currying subtraction
- using haskell's map function to calculate the sum of a list
- cabal not installing dependencies when needing profiling libraries?
- list of different types?
- how to increment a variable in functional programming
- new state of the art in unlimited generation of hamming sequence
- is it possible to do quicksort of a list with only one passing?
- function definition by special cases in ghci
- what does the `forall` keyword in haskell/ghc do?
- abusing the algebra of algebraic data types - why does this work?
- are there pronounceable names for common haskell operators? [closed]
- what is the purpose of the reader monad?
- how does deriving work in haskell?
- what is the difference between int and integer?
- what are “n+k patterns” and why are they banned from haskell 2010?
- integral operators quot vs. div
- how do i write, “if typeclass a, then a is also an instance of b by this definition.”
- composing monads v. applicative functors
- how to correctly curry a function in javascript?
- composing function composition: how does (.).(.) work?
- haskell: how to evaluate a string like “1+2”
- merging two lists in haskell
- foldr/foldl for free when tree is implementing foldable foldmap?
- euler 43 - is there a monad to help write this list comprehension?
- why can a num act like a fractional?
- need to partition a list into lists based on breaks in ascending order of elements (haskell)
- why does haskell's bind function take a function from non-monadic to monadic
- why is there “data” and “newtype” in haskell?
- what constitutes a fold for types other than list?
- why is lazy evaluation useful?
- why is haskell (sometimes) referred to as “best imperative language”?
- generating fibonacci numbers in haskell?
- how to compare two functions for equivalence, as in (?x.2*x) == (?x.x+x)?
- how does data.memocombinators work?
- uses for haskell id function
- python faster than compiled haskell?
- what is levity polymorphism
- no instance for (fractional int) arising from a use of `/'
- can you overload + in haskell?
- library function to compose a function with itself n times
- haskell ghc: what is the time complexity of a pattern match with n constructors?
- check whether a type is an instance of show in haskell?
- typeclass constraints on data declarations
- what to do if i cannot find my emacs init file?
- haskell: how to create most generic function possible that applies a function to tuple items
- comparing functions in haskell
- foldl implementation with runtime errors
- applicative functor evaluation is not clear to me
- prefix form of unary operator in haskell
- how can i generate different random values in haskell?
- what's the status of multicore programming in haskell?
- what is the comonad typeclass in haskell?
- what characters are permitted for haskell operators?
- dot operator in haskell: need more explanation
- haskell operator vs function precedence
- how to make a caf not a caf in haskell?
- convert string to integer/float in haskell?
- how do i convert a list to a tuple in haskell?
- sampling sequences of random numbers in haskell
- replace individual list elements in haskell?
- given a haskell type signature, is it possible to generate the code automatically?
- lambda for type expressions in haskell?
- object oriented programming in haskell
- how to make a type with restrictions
- converting io int to int
- how to handle side effect with applicative?
- haskell: double every 2nd element in list
- zip with default value instead of dropping values?
- how to convert unicode escape sequence to unicode string in haskell
- how to interpret bind/>>= of the function instance?
- expressing do block using only monadic bind syntax
- haskell running out of memory with finite lists
- haskell monad - how does monad on list work?
- why are side-effects modeled as monads in haskell?
- why not be dependently typed?
- which parts of real world haskell are now obsolete or considered bad practice?
- how does haskell printf work?
- haskell: where vs. let
- exception handling in haskell
- in haskell, when do we use in with let?
- how does the st monad work?
- forall in scala
- functional lenses
- is there a function to flatten a nested list of elements?
- in what sense is the io monad pure?
- understanding a recursively defined list (fibs in terms of zipwith)
- what advantage does monad give us over an applicative?
- what is predicativity?
- explanation of “tying the knot”
- point free problems in haskell
- an example of a foldable which is not a functor (or not traversable)?
- defining a new monad in haskell raises no instance for applicative
- what is fusion in haskell?
- non-trivial lazy evaluation
- does haskell have variables?
- removing duplicates from a list in haskell without elem
- what does the : infix operator do in haskell?
- extracting the exponent and mantissa of a javascript number
- floating point math in different programming languages
- unicode console i/o in haskell on windows
- why does ocaml sometimes require eta expansion?
- when are type signatures necessary in haskell?
- how to reuse a type variable in an inner type declaration
- pseudo-quicksort time complexity
- calculate n-ary cartesian product
- is it ever possible to detect sharing in haskell?
- understanding the haskell as-pattern
- “=~” raise “no instance for (regexcontext regex [char] [string])”
- counting unique elements in a list
- can i match a data constructor wildcard in haskell?
- unwrapping a monad
- understanding lighting in opengl
- better display of boolean formulas
- reading file into types - haskell
- is there a way to place some impure code inside pure functions?
- haskell type vs data constructor
- real world haskell programming [closed]
- haskell's algebraic data types
- which haskell (ghc) extensions should users use/avoid?
- what's the absurd function in data.void useful for?
- haskell composition (.) vs f#'s pipe forward operator (|>)
- simplest non-trivial monad transformer example for “dummies”, io+maybe
- what does this list permutations implementation in haskell exactly do?
- ghc's rts options for garbage collection
- using haskell for sizable real-time systems: how (if?)?
- haskell - foldl and foldr?
- how to make a haskell cabal project with library+executables that still run with runhaskell/ghci?
- implementing a language interpreter in haskell
- avoiding namespace pollution in haskell
- what's the point of map in haskell, when there is fmap?
- how do exceptions in haskell work?
- haskell: why the convention to name a helper function “go”?
- sets, functors and eq confusion
- what exactly is the kind “*” in haskell?
- lazy evaluation and time complexity
- how would i translate a haskell type class into f#?
- how to run a haskell file in interpreted mode
- how to reduce duplication in the build-depends fields of a .cabal file?
- why should applicative be a superclass of monad?
- is this property of a functor stronger than a monad?
- haskell file reading
- calling haskell functions from python
- towers of hanoi with k pegs
- useful operations on free arrows
- what’s an example of a monad which is an alternative but not a monadplus?
- why recursive `let` make space effcient?
- how to get every nth element of an infinite list in haskell?
- haskell: equality constraint in instance
- how are mutable arrays implemented in haskell?
- how to zip multiple lists in haskell?
- do ghc-compiled binaries require ghc or are they self-contained?
- is spoon unsafe in haskell?
- constructing efficient monad instances on `set` (and other containers with constraints) using the continuation monad
- is it possible to export constructors for pattern matching, but not for construction, in haskell modules?
- seeking constructive criticism on monad implementation
- should i use typeclasses or not?
- how to catch a no parse exception from the read function in haskell?
- haskell “where” indentation: why must it be indented past identifier?
- turning a => m[b] into m[a => b]
- haskell - simple constructor comparison (?) function
- are functor instances unique?
- haskell: check if integer, or check type of variable
- why does the 2-tuple functor instance only apply the function to the second element?
- what is the history of the variable names x and xs? [closed]
- how do you compute the difference between successive elements of a list of unknown size, functionally?
- subsequences of length n from list performance
- getting a list of all possible data type values in haskell
- haskell program outputs `<<loop>>`
- what does eta reduce mean in the context of hlint
- how do i build a list with a dependently-typed length?
- haskell infinite recursion
- haskell testing workflow
- beginners guide to haskell? [closed]
- what does the “just” syntax mean in haskell?
- difference between oop interfaces and fp type classes
- what's the status of current functional reactive programming implementations?
- simple haskell unit testing
- java's interface and haskell's type class: differences and similarities?
- parametric polymorphism vs ad-hoc polymorphism
- haskell library for 2d drawing [closed]
- shorthand way for assigning a single field in a record, while copying the rest of the fields?
- how does a haskell compiler work?
- y combinator in haskell
- left and right folding over an infinite list
- why is scala's type inference not as powerful as haskell's?
- how are dynamic programming algorithms implemented in idiomatic haskell?
- goto in haskell: can anyone explain this seemingly insane effect of continuation monad usage?
- haskell type vs. newtype with respect to type safety [closed]
- haskell weird kinds: kind of (->) is ?? -> ? -> *
- haskell: how to map a tuple?
- how does haskell tail recursion work?
- is there any haskell function to concatenate list with separator?
- what is applicative functor definition from the category theory pov?
- haskell error parse error on input `='
- how can i simulate haskell's “either a b” in java
- monad join function
- what is the datakinds extension of haskell?
- what are skolems?
- haskell pattern matching - what is it?
- testing functions in haskell that do io
- what monads can be expressed as free over some functor?
- fibonacci's closed-form expression in haskell
- how to “debug” haskell with printfs?
- name conflicts in haskell records
- can someone explain to me why the app function of arrowapply makes them as powerful as monads?
- how to compile haskell to a static library?
- why is there no implicit parallelism in haskell?
- desugaring do-notation for monads
- the concept of bottom in haskell
- performance considerations of haskell ffi / c?
- “illegal instance declaration” when declaring instance of isstring
- what happens to you if you break the monad laws?
- preferred method for viewing code generated by template haskell
- combining free types
- accessing members of a custom data type in haskell
- quickcheck: arbitrary instances of nested data structures that generate balanced specimens
- how to avoid recompiling in this cabal file?
- what's the difference between text.parsercombinators.parsec and text.parsec
- int vs word in common use?
- repeatedly applying a function until the result is stable
- have i upgraded my cabal-install?
- haskell: read input character from console immediately, not after newline
- could not find module `data.map' — it is a member of the hidden package
- simplifying a gadt with uniplate
- in haskell, why non-exhaustive patterns are not compile-time errors?
- two-dimensional zipper
- restricting a monad to a type class
- how to take out a value out of a monad in haskell?
- extending an existing type in ocaml
- haskell tuple size limit
- pointer equality in haskell?
- making numeric functions an instance of num?
- haskell space overflow
- can i have an unknown knownnat?
- how to do automatic differentiation on complex datatypes?
- type error with rank-2 types and function composition
- kind signatures
- is it possible to speed up a quicksort with par in haskell?
- how much is applicative really about applying, rather than “combining”?
- test if all elements of a foldable are the same
- why does ghci say that 1.1 + 1.1 + 1.1 > 3.3 is true?
- how to write a monad instance for a pair where both arguments have the same type?
- is it possible to nest guards in haskell?
- creating custom instance of uarray
- haskell: composing function with two floating arguments fails
- console interactivity in netwire?
- lift to fix the *inside* of a monad transformer stack
- accessing a specific element in a tuple
- what is going on with the types in this ghci session?
- equivalent of haskell scanl in python
- using cabal with multiple ghc versions
- why it is impossible to divide integer number in haskell?
- haskell: overlapping instances
- why is the strictness-introducing function called seq?
- haskell: unexpected output for expression [0, 0.1 .. 1]
- incomplete type signature
- how can i implement generalized “zipn” and “unzipn” in haskell?
- a faster way of generating combinations with a given length, preserving the order
- haskell syntax error for where statement
- stack build fails due to missing package although stack ghci works
- write this scala matrix multiplication in haskell
- convert a “do” notation with more than two actions to use the bind function
- implementing take using foldr
- why duplicaterecordfields cannot have type inference?
- using gnu/linux system call `splice` for zero-copy socket to socket data transfers in haskell
- it works when loaded from file, but not when typed into ghci. why?
- creating infinite list out of adt
- how to use variable from do block assignment line in a where clause?
- how to convert arbitrary type to string, without adding extra quotes to strings?
- no instance for (num (int -> int)) arising from the literal `5'
- kleisli arrow in netwire 5?
- monomorphism restriction, ghci, and let expression
- haskell quickbatch: testing ziplist monoid at mconcat results in
- applicative parser stuck in infinite loop
- a mystery involving putstrln
- good haskell source to read and learn from [closed]
- what does “coalgebra” mean in the context of programming?
- what is the haskell response to node.js?
- hidden features of haskell [closed]
- what's so bad about template haskell?
- what haskell representation is recommended for 2d, unboxed pixel arrays with millions of pixels?
- what are arrows, and how can i use them?
- good introductory text about ghc implementation?
- mtl, transformers, monads-fd, monadlib, and the paradox of choice
- haskell lightweight threads overhead and use on multicores
- what is the difference between traits in rust and typeclasses in haskell?
- existential vs. universally quantified types in haskell
- understanding arrows in haskell
- histomorphisms, zygomorphisms and futumorphisms specialised to lists
- how can i uninstall a version of a cabal package?
- what are the benefits of applicative parsing over monadic parsing?
- what is the difference between cabal and stack?
- orphaned instances in haskell
- monad in non-programming terms
- writing cojoin or cobind for n-dimensional grid type
- why are haskell algebraic data types “closed”?
- disadvantages of scala type system versus haskell?
- calling haskell from c#
- my cabal packages are fubar; how can i purge them and start over?
- haskell function execution time
- what is () in haskell, exactly?
- how can i get nth element from a list?
- why can i not make string an instance of a typeclass?
- haskell ide for windows? [closed]
- what is the relationship between unboxed types and strictness?
- st monad == code smell?
- arrows are exactly equivalent to applicative functors?
- curious about the hashtable performance issues
- when would i want to use a free monad + interpreter pattern?
- does haskell support object oriented programming
- impredicative types vs. plain old subtyping
- why is haskell missing “obvious” typeclasses
- making small haskell executables?
- neural network always produces same/similar outputs for any input
- functional dependencies in haskell
- specialization with constraints
- differences between functors and endofunctors
- haskell export current module with additional imported module
- frp - event streams and signals - what is lost in using just signals?
- optimizing numerical array performance in haskell
- where do values fit in category of hask?
- why is there no io transformer in haskell?
- printing elements of a list on new lines
- fixing issues noted by ghc-pkg check
- why aren't there many discussions about co- and contra-variance in haskell (as opposed to scala or c#)?
- what does the => symbol mean in haskell?
- what exactly makes option a monad in scala?
- why does this haskell code work successfully with infinite lists?
- haskell recursion and memory usage
- using vectors for performance improvement in haskell
- exitfailure 9 when trying to install ghc-mod using cabal
- i taught ghci to compile my posts. can i make it slicker?
- parallel map in haskell
- laziness and tail recursion in haskell, why is this crashing?
- what does :: (double colon) stand for?
- how does djinn work?
- how to express existential types using higher rank (rank-n) type polymorphism?
- does haskell have list slices (i.e. python)?
- where can i read up on the haskell “->” operator?
- catamorphism and tree-traversing in haskell
- haskell: can i perform several folds over the same lazy list without keeping list in memory?
- how to design a monadic stack?
- how to improve the performance of this haskell program?
- scotty: connection pool as monad reader
- how do you do an in-place quicksort in haskell
- haskell: tail recursion version of depth of binary tree
- zipwith analogue in python?
- understanding ghc assembly output
- automatic conversion between string and data.text in haskell
- what do the parentheses signify in (x:xs) when pattern matching?
- combining multiple states in statet
- understanding haskell's rankntypes
- exceptions and monad transformers
- converting ieee 754 floating point in haskell word32/64 to and from haskell float/double
- what does 'qualified' mean in 'import qualified data.list' statement?
- practical use of curried functions?
- understanding haskell type signatures
- one repl to bind them all?
- is there some way to define an enum in haskell that wraps around?
- haskell: example of function of type a -> a, besides the identity
- confused about function as instance of functor in haskell
- more fun with applicative functors
- how can i set my ghci prompt to a lambda character on windows?
- is there a fast algorithm to determine the godel number of a term of a context free language?
- is it possible to encode a generic “lift” function in haskell?
- what is the shows trick in haskell?
- in functional programming, is it considered a bad practice to have incomplete pattern matchings
- advantages of strict fields in data types
- efficiently checking that all the elements of a (big) list are the same
- haskell interact function
- must mplus always be associative? haskell wiki vs. oleg kiselyov
- turn off lazy evaluation in haskell
- statically linking a c library with a haskell library
- load pure global variable from file
- sat solving with haskell sbv library: how to generate a predicate from a parsed string?
- 1 :: list[nothing] in foldleft
- how to tell if a list is infinite?
- division in haskell
- haskell - what is control.applicative.alternative good for?
- what are the reasons that protocols and multimethods in clojure are less powerful for polymorphism than typeclasses in haskell?
- feed elements of a tuple to a function as arguments in haskell?
- convert a string list to an int list
- using a lens to read multiple fields
- haskell quickcheck best practices (especially when testing type classes)
- ghc 7.10 generates slower code than older versions
- is erlang “single assignment” different from haskell “immutable values”?
- what advantages do stablenames have over reallyunsafeptrequality#, and vice versa?
- understanding a rank 2 type alias with a class constraint
- statically link c++ library with a haskell library
- haskell list of tuples to list?
- accumulators in haskell
- const function in haskell
- why does foldr use a helper function?
- can haskell functions be serialized?
- can i ensure that haskell performs atomic io?
- why don't haskell list comprehensions cause an error when pattern match fails?
- are there contravariant monads?
- no output will be generated because there is no main module
- subdividing a list in haskell
- io/monadic assign operator causing ghci to explode for infinite list
- how to find out ghc's memory representations of data types?
- what's the practical value of all those newtype wrappers in `data.monoid`?
- how do you override haskell type class instances provided by package code?
- how to apply higher order function to an effectful function in haskell?
- what is “n” in rankntypes
- pairing adjacent list items in haskell
- in haskell, is there infinity :: num a => a?
- rotate a list in haskell
- what is the difference between `ix` and `at` in the lens library of haskell
- haskell scoping in nested function definitions using where
- can i magic up type equality from a functional dependency?
- haskell: no instance for (eq a) arising from a use of `=='
- how do i use multiple where clauses in ghci?
- how can i determine size of a type in haskell?
- testing with htf
- can reactive-banana handle cycles in the network?
- ghc rewrite rule specialising a function for a type class
- total real-time persistent queues
- is there a way to generalize this triemap code?
- equality of functions in haskell
- under what circumstances could common subexpression elimination affect the laziness of a haskell program?
- is there an assertexception in any of the haskell test frameworks?
- stm monad problem
- type inference with gadts - a0 is untouchable
- how does ghc/haskell decide what character encoding it's going to decode/encode from/to?
- performance problem with euler problem and recursion on int64 types
- is there an iteratee-like concept which pulls data from multiple sources?
- tail optimization guarantee - loop encoding in haskell
- how to print memory address of a list in haskell
- how to write a variadic function in f# emulating a similar haskell solution?
- interleave list of lists in haskell
- structural induction in haskell
- while loop in haskell with a condition
- why are ghc sparks fizzling?
- type-threaded heterogenous lists and defaulting(?) with type families?
- haskell, polyvariadic function and type inference
- why is listt monad transformer considered buggy - what monad laws it breaks?
- breaking data.set integrity without generalizednewtypederiving
- load a new package in ghci using stack
- why can't haskell be tricked into performing io operations by using strict evaluation?
- what do people use the identity function for?
- haskell record syntax and type classes
- how to filter an infinite list in haskell
- style vs performance using vectors
- type signature in a where clause
- haskell - “how can i use ”if“ statement in ”do" block properly?
- testing quickcheck properties against multiple types?
- why is there no << in the haskell standard library?
- how do i pad string representations of integers in haskell?
- how to determine the directory in which a running haskell script or application lives?
- sqrt, perfect squares and floating point errors
- haskell fibonacci explanation
- fastest way to read large binary file in haskell?
- nixos, haskell, opengl : problems with building and running opengl programs
- why does parsect type have 'u' argument?
- algorithm to generate all possible arrays of ones and zeros of a given length
- accessing the “default show” in haskell?
- can't install cairo with cabal on windows - how to get pkg-config on win?
- lazy evaluation: why is it faster, advantages vs disadvantages, mechanics (why it uses less cpu; examples?) and simple proof of concept examples [closed]
- how do i get to haskell to output numbers not in scientific notation?
- combining lenses
- checking for a particular data constructor
- unifying c -> a -> b and (a -> b) -> c
- c vs haskell collatz conjecture speed comparison [closed]
- why the haskell sequence function can't be lazy or why recursive monadic functions can't be lazy
- why wrapping the data.binary.put monad creates a memory leak?
- determining function behavior from the type of the function
- parallel “folding” in haskell
- why does importing control.applicative allow this bad code to type check?
- how can i use contradictory evidence?
- pattern matching equivalent variables in haskell, like in prolog
- generalising ($) like control.category generalises (.)
- filter subsets based on length?
- haskell: trapped in io monad
- how to take an array slice with repa over a range
- tuple and function composition
- what is the default type evaluation of monadplus in haskell?
- using haskell's “maybe”, type declarations [beginner's question]
- type of a double
- what is the significance of algebraic datatypes with zero constructors?
- why cant an int and a floating point number be added in haskell
- nice representation of primitive recursive functions in haskell
- how to define function only for old versions in ghc?
- haskell no instance for show
- using haskell's singletons, how can i write `fromlist :: [a] -> vec a n`?
- understanding this definition of hlist
- haskell compiler error: not in scope
- how to get readert to work with another monad transformer?
- pattern match haskell higher order function?
- types: (num a, ord a) versus (int a)?
- how to view higher-order functions and io-actions from a mathematical perspective?
- memoization pascals triangle
- what was wrong with control.monadplus.free?
- what is the meaning of “let x = x in x” and “data float#” in ghc.prim in haskell
- haskell time limit on evaluation
- what does the => sign mean in haskell?
- haskell why does “num x” require “show x”?
- strange haskell expression with type num ([char] -> t) => t
- haskell: why aren't infix type constructors allowed?
- is mapm in haskell strict? why does this program get a ?
- using leksah debugger with programs that use readln and similar
- local variables in template haskell declarations
- works in ghci but not in the file
- how can undecidable instances actually hang the compiler?
- cannot find function similar to liftm2
- lift to maybe using a predicate
- continuation monad for a yield/await function in haskell
- cabal error: invalid preprocessing directive #-}
- haskell : loading all files in current directory path
- acid-state: monadstate instance for update
- why is the unary minus operator problematic in this expression: (- 2) 1?
- is there any syntax for non-recursive binding in haskell, just like the difference between `let` and `let rec` in similar languages?
- fun with types! resolving multiple instance declarations
- what approach to error handling to use with pipes(-core)?
- simple haskell splitlist
- negative doubles or floats in haskell (macports)
- installing haskell on windows, cabal config
- why are these family instance declarations conflicting?
- haskell: calculate differences of every pair of adjacent elements in a list
- pick a random element from a list in haskell
- creating an instance of the fractional typeclass in haskell
- count occurrence of an element in haskell list and return max sequence
- can docker solve a problem of mismatched c shared libraries?
- is the dispatch of a haskell typeclass dynamic?
- issue installing snap on macos sierra
- haskell - manipulating lists [closed]
- gtk2hs windows 7 installation
- how to show utf8 text with snap and heist?
- functional, tail-recursive way to generate all possible combinations from a dictionary and a dimension
- how to convert a list of (char,int) to a string with the given number of repeated chars?
- haskell, how to unwrap io monad
- parse error in valid code
- why complains haskell parse error on input `|' in this function?
- the pause monad
- running a haskell program on the android os
- what optimizations can ghc be expected to perform reliably?
- does haskell require a garbage collector?
- how can i use functional programming in the real world? [closed]
- what is the ecosystem for haskell web development? [closed]
- higher-kinded types with c++
- maintaining complex state in haskell
- dependency injection in haskell: solving the task idiomatically [closed]
- haskell: converting int to string
- profiling builds with stack
- use of haskell state monad a code smell?
- what are the differences and similarities of scala and haskell type systems?
- is it possible to program and check invariants in haskell?
- what is supercompilation?
- haskell record syntax
- how to get cabal and nix work together
- comparison of priority queue implementations in haskell
- how can my haskell program or library find its version number?
- in haskell performing `and` and `or` for boolean functions
- motivation behind phantom types?
- haskell on windows setup
- testing io actions with monadic quickcheck
- lazy evaluation vs macros
- what is the store comonad?
- how do experienced haskell developers approach laziness at *design* time?
- the type checker is allowing a very wrong type replacement, and the program still compiles
- why should i use applicative functors in functional programming?
- starray documentation for newbies and state/st related questions
- how do i enable language extensions from within ghci?
- a simple example showing that io doesn't satisfy the monad laws?
- tools for generating haskell function dependency (control flow) graph?
- what do “reify” and “reification” mean in the context of (functional?) programming?
- haskell on jvm?
- haskell (:) and (++) differences
- why do we have map, fmap and liftm?
- haskell unit testing
- when should one use a kleisli?
- ackermann very inefficient with haskell/ghc
- advantages of subtyping over typeclasses
- haskell: can't use “map putstrln”?
- parsec: applicatives vs monads
- how to provide explicit type declarations for functions when using ghci?
- is 'chaining operations' the “only” thing that the monad class solves?
- can a monad be a comonad?
- how can i parse the io string in haskell?
- how does arrowloop work? also, mfix?
- how to write recursive lambda expression in haskell?
- create a static haskell linux executable
- how do you make a generic memoize function in haskell?
- algorithm to create fair / evenly matched teams based on player rankings
- haskell: am i misunderstanding how arrows may be used?
- modular program design - combining monad transformers in monad agnostic functions
- how to configure ghci to automatically import modules
- why does this haskell code run slower with -o?
- difference between print and putstrln in haskell
- what is happening when i compose * with + in haskell?
- monad instance for binary tree
- what is the purpose of `data.proxy`?
- are there any connections between haskell and linq?
- monoid vs monadplus
- haskell's ($) is a magic operator?
- list of showables oop-style in haskell?
- how does incoherentinstances work?
- lax monoidal functors with a different monoidal structure
- is there ever a good reason to use unsafeperformio?
- are there any purely functional schemes or lisps?
- what's the relationship between profunctors and arrows?
- how does the haskell rec keyword work?
- how are functors in haskell related to functors in category theory?
- foldr and foldl further explanations and examples
- what is a “spark” in haskell
- why can haskell exceptions only be caught inside the io monad?
- functional languages (erlang, f#, haskell, scala) [closed]
- installing ghc binaries on linux (can't find libgmp.so)
- what is haskell's style of polymorphism?
- foldleft v. foldright - does it matter?
- difference between hsc2hs and c2hs?
- are there non-trivial foldable or traversable instances that don't look like containers?
- typeclasses and overloading, what is the connection?
- how do i do automatic data serialization of data objects?
- haskell parser to ast data type, assignment
- can i get `cabal install` to use multiple cores?
- why were type classes difficult to implement?
- haskell vs. procedural programming in the real world [closed]
- state monad, sequences of random numbers and monadic code
- best way to implement ad-hoc polymorphism in haskell?
- finite state transducers in haskell?
- explain type classes in haskell
- haskell and memoization of pure function results
- haskell convert integer to int?
- “strictly positive” in agda
- haskell, char, unicode, and turkish
- am i abusing unsafeperformio?
- relax ordering constraints in monadic computation
- zipper like data structure with more than one cursor
- is it possible to place inequality constraints on haskell type variables?
- compute as much of a list as possible in a fixed time
- making a read instance in haskell
- does haskell erase types?
- improving treap implementation
- references for learning the theory behind pure functional languages such as haskell?
- what is the most efficient implementation of arrays with functional updates?
- streaming recursive descent of a directory in haskell
- how can i load optimized code in ghci?
- where can i learn about #ifdef?
- haskell: force floats to have two decimals
- how to compile a resource into a binary in haskell?
- how to make callcc more dynamic?
- “<-” bindings in do notation
- how does haskell handle overloading polymorphism?
- how (fmap . fmap) typechecks
- why can applicative functors have side effects, but functors can't?
- how to use criterion to measure performance of haskell programs?
- why is `pure` only required for applicative and not already for functor?
- what's a space leak?
- haskell linear algebra?
- re-export qualified?
- haskell date parsing and formatting
- understanding haskell's stack program and the resolver and lts version
- how to invoke bash or shell scripts from a haskell program?
- why are logical operators in javascript left associative?
- what's the current status of restricted monads?
- folding, function composition, monads, and laziness, oh my?
- can gadts be used to prove type inequalities in ghc?
- is it possible to implement monadfix for `free`?
- difference in capability between fmap and bind?
- using list elements and indices together
- how do i define a data type that only accepts numbers?
- why does adding a polymorphic type signature degrade performance?
- how to selectively link certain system libraries statically into haskell program binary?
- how to specify dependency on external c library in .cabal?
- monad with no wrapped value?
- haskell: monadic takewhile?
- how do you write rewrite rules for typeclass methods?
- functional-banana traveller game - intriguing and maddening
- what are the key differences between the repa 2 and 3 apis?
- haskell: unnecessary binary growth with module imports
- newline in haskell string?
- why can't i define a new type in ghci?
- need a tutorial for using ghc to parse and typecheck haskell
- how to get haskell quickcheck 2.4 to increase # tests?
- to write or not to write `module main where` in haskell
- how to view the generated code for derived instances / deriving in haskell
- how to find the longest word in list?
- enable --hyperlink-source for “cabal install”
- all matches of regex in haskell
- are there any good use cases for overlappinginstances?
- why does a more general type affect runtime in haskell?
- does f# have an equivalent to haskell's take?
- binary serialization for lists of undefined length in haskell
- which haskell library will let me save a 2d array/vector to a png/jpg/gif… file?
- haskell: type inference and function composition
- are there “type-level combinators”? will they exist in some future?
- ghc: partially compile haskell code?
- how to translate this math formula in haskell or python? (was translated in php)
- how to install haskell cabal tool for haskell 7.6.1 on mac osx?
- haskell pattern match “diverge” and ⊥
- why isn't every type part of eq in haskell?
- cabal install … failing - osx - many unsatisfied packages
- in haskell, what's the difference between using takewhile or using a “regular” inequality in this list comprehension?
- can i make a lens with a monad constraint?
- once i have an f-algebra, can i define foldable and traversable in terms of it?
- how to use bind with nested monads?
- applicative functors other than monads and ziplist?
- force `stack` to rebuild an installed package
- zipping with padding in haskell
- haskell: inserting every line from a file into a list
- haskell: which soap client lib to use?
- haskell :: aeson :: parse adt based on field value
- is it possible to generate and run templatehaskell generated code at runtime?
- passing list elements as parameters to curried function
- getting 'a' value from 'maybe a' return type in haskell
- using gcc instead of clang in ghci or ghc
- get all names from xml-conduit
- in haskell, how do you trim whitespace from the beginning and end of a string?
- can a compiler automatically detect pure functions without the type information about purity?
- static types, polymorphism and specialization
- which frp package to choose? [closed]
- haskell, multiplying int and float within a function
- what is the type of nothing in haskell?
- how about haskell's gc performance for soft realtime application like games?
- why can haskell handle very large numbers easily?
- see which typeclasses the type is an instance of in ghci?
- haskell library to manipulate a git repo
- can the ffi deal with arrays? if so, how?
- why there needs to be a $ in calls like “runsomemonad $ do …”?
- get a haskell record's field names as a list of strings?
- profile haskell without installing profiling libraries for all dependencies
- convert a string representing a binary number to a base 10 string haskell
- does an io monad make sense in a language like c#
- haskell: converting a list of (a, b) key-value pairs (with possibly repeated keys) to a list of (a, [b]) grouped by key
- lazily tying the knot for 1 dimensional dynamic programming
- haskell - is effect order deterministic in case of applicative?
- delimiting the io monad
- questions on a haskell -> c# conversion
- haskell : display/get list of all user defined functions
- creating infix operators in scala
- list comprehension in haskell, python and ruby
- how to modify using a monadic function with lenses?
- haskell : can only load one file at a time via :load
- managing state - chapter 3 of sicp
- why is this prime test so slow?
- langford sequence implementation haskell or c
- faster alternatives to hfilesize to retrieve the size of a file in haskell?
- haskell pipes and branching
- limit a number to a range (haskell)
- tidying up monads - turning application of a monad transformer into newtype monad
- juggling existentials without unsafecoerce
- why does my mapreduce implementation (real world haskell) using iteratee io also fails with “too many open files”
- type constraints on all type family instances
- why sum x y is of type (num a) => a -> a -> a in haskell?
- problem when mixing type classes and type families
- how do i test for an error in haskell?
- is it possible to derive induction for the church-encoded nat?
- making a single function work on lists, bytestrings and texts (and perhaps other similar representations)
- haskell prime test
- converting data.reify explicit sharing graph to ast with de bruijn indices
- accumulating errors with eithert
- explain the haskell breadth first numbering code to traverse trees
- how should i represent an ast annotated with additional information?
- why does function concat use foldr? why not foldl'
- simple text menu in haskell
- how to perform database queries in ghci in yesod application
- cabal cannot find locally sourced (yet correctly installed) packages
- how to use the selname function of ghc.generics?
- basic i/o performance in haskell
- partially applied types in haskell
- can someone explain this lazy fibonacci solution?
- hspec nothing expectation failing to compile
- finding index of element in a list in haskell?
- is there a canonical haskell type for “one or both”?
- understanding haskell's bool deriving an ord
- haskell how to convert char to word8
- is there a functor that cannot be a law-abiding apply?
- bit size of ghc's int type
- haskell class num not contained in ord?
- where does the name “xs” for pattern matching come from?
- char to string function
- what is exactly an indexed functor in haskell and what are its usages?
- a way to avoid a common use of unsafeperformio
- how arbitrary is the “ap” implementation for monads?
- data families use cases
- a way to declare a constant value in a type class
- why is there not 'alternative' instance for 'control.applicative.const'
- traversing with a biapplicative
- calling dynamically linked haskell code from rust
- idiomatic bidirectional pipes with downstream state without loss
- function to return a haskell record with a modified field
- unwrapping datatypes in haskell without extraneous code
- getting all the diagonals of a matrix in haskell
- help with reader monad
- does this gadt actually have type role representational
- composing database.esqueleto queries, conditional joins and counting
- what does left arrow <- mean outside a do block?
- is access to the internal structure of a monad required for a monad transformer?
- what is an idiomatic way to add lists in haskell?
- is it possible to produce stand alone haskell executable
- why is `($ 4) (> 3)` equivalent to `4 > 3`?
- why are difference lists not an instance of foldable?
- haskell errors: “lacks an accompanying binding” and “not in scope”
- syntax rules for haskell infix datatype constructors
- how to define a monad instance to types with multiple values?
- haskell way to do error checking of multiple items with abort
- how to limit a int field to a range of values?
- unit testing io int and similar in haskell
- why am i able to use my value constructor even though i don't export it?
- operator precedence in haskell
- is it possible to do the reader monad from haskell in clojure?
- is it actually possible to remove “pi” from calculus of constructions?
- type inference in patterns
- implementing read typeclass where parsing strings includes “$”
- efficient bit-fiddling in a lfsr implementation
- difference between concatmap f xs and concat $ map f xs?
- uncurry for n-ary functions
- how to add a class constraint to a functor instance declaration in haskell?
- linking c++ dll with haskell-platform on windows, outputs 'undefined reference'
- let vs regular assignment in ghci
- no instance for (show ([(char, char)] -> char))
- haskell multiply int and real number
- composing floor and sqrt in haskell
- haskell: splitting pipes (broadcast) without using spawn
- stack space overflow when computing primes
- haskell: how to only generate .hi file with ghc?
- why does stack not recognize the dependency it just installed?
- how to write semigroup instance for this data type?
- how to deliver json over http using warp with aeson
- multiline matching in haskell posix
- any example of a custom preprocessor in haskell?
- is there a compiler-extension for untagged union types in haskell?
- zipwith for trees in haskell
- how to print intermediate result in functor and applicative in haskell
- why is perl so afraid of “deep recursion”?
- why haskell range needs spaces when using [lt .. gt]?
- haskell (n+1) in pattern matching
- how to avoid in haskell?
- a basic monoid definition gives “no instance for (semigroup mymonoid) arising from the superclasses of an instance declaration”
- haskell pattern matching on the empty set
- haskell pattern matching - how to use constants variable
- is the `monad ((,) w)` instance anywhere standard?
- can i print in haskell the type of a polymorphic function as it would become if i passed to it an entity of a concrete type?
- haskell: correct practice to specify version in source?
- haskell ghc compiling/linking error, not creating executable. (linux)
- does a useful haskell hashmap/hashtable/dictionary library exist?
- haskell: test if list contains specific “sublist”
- how do i avoid referring to all state variables when updating only a few?
- why is join standalone, instead of part of the minimal implementation of the monad typeclass?
- how does haskell deal with documentation?
- haskell: template haskell and the scope
- how can i print a newline properly in haskell?
- unable to compile writer monad example from “learn you a haskell”
- can i write a higher order type for a -> b -> *?
- which dictionary does ghc choose when more than one is in scope?
- how to kill a thread in haskell
- how to install haskell platform on linux debian wheezy?
- can i get knownnat n to imply knownnat (n * 3), etc?
- haskell quickcheck2 using bytestring?
- project euler 14: performance compared to c and memoization
- may i limit memory usage per function/monad/thread in haskell?
- in haskell, what does it mean if a binding “shadows an existing binding”?
- point-free style and using $
- how to know what are the full list of function availlable in an import?
- setting argv[0] in haskell?
- what purpose does the complexity of `except` serve in haskell?
- what is a general scheme for writing a function in pointfree style?
- view non-exposed library functions while developing in haskell
- why haskell doesn't accept my combinatoric “zip” definition?
- compute md5 digest of file in haskell
- handling exceptions in an iteratee library without an error state
- problem with incomplete input when using attoparsec
- stack install ghc-mod fails with dependencies conflicts on osx 10.13.4
- doing dependency injection using monad stacks
- patching a recursively-defined list without a <<loop>>
- implementation of “show” for function
- ghci self-referencing assignment
- quickcheckall always return “true”
- is polykinded type application injective?
- what are nonlinear patterns
- can fold be used to create infinite lists?
- pointfree composition with multiple variables
- haskell io (string) and string
- how can i get the type of a polymorphic function for a specific type class instance?
- capturing audio input from microphone, with haskell?
- understanding order of evaluation in haskell
- does the main-function in haskell always start with main = do?
- dealing with the current time in reactive-banana
- why is tolist (1, 2) == [2]
- proving composition law for maybe applicative
- how can holes and contexts be implemented for higher-kinded types in a lens style uniplate library?
- haskell style/efficiency
- accessing documentation for a function from hoogle command line
- functional purity using 'let' in haskell
- custom json errors for servant-server
- ambiguous type variable but not in ghci?
- when can eta reduction change a function's type?
- type abstraction in ghc haskell
- why doesn't this definition cover all pattern cases?
- why this program seems not to be fusing properly?
- haskell novice trouble with splitting a list in half
- upgrading the ghc version being used by haskell stack
- why pipes defines inner functions
- advantages of using truncation towards minus infinity vs towards zero
- can you formulate the bubble sort as a monoid or semigroup?
- no instance for (show (io ())) arising from a use of ‘print’
- hxt: surprising behavior when reading and writing html to string in pure code
- cannot get cabal to find the mpi library for haskell-mpi on windows [closed]
- how can i build a threadid given that i know the actual number?
- haskell: how to put multiple instances in the same module?
- haskell : use -xflexiblecontexts to permit this?
- haskell pattern matching char in a string
- using utctime with hamlet
- applicative functors as monoidal functors
- higher-order functions and st
- endofunction as monoid
- combining lexer and parser in a parser combinator
- noob “duplicate instance declarations” (again)
- how to write an instance for generic to derive a function like zero::a (i.e. a constant)?
- how to speed haskell io with buffering?
- how does this state monad code works?
- statically enforcing that two objects were created from the same (int) “seed”
- elegant haskell case/error handling
- unit testing io actions with hspec
- haskell rules for selecting between type instances for int, double and integer
- type families for dummies
- haskell - using a constant in pattern matching
- haskell infinite list of incrementing pairs
- how to examine a quoted data constructor name in template haskell?
- haskell not lazy evaluating interleaving
- yesodauthemail could not deduce m ~ handlerfor site0
- haskell read/write binary files complete working example
- how to interpret callcc in haskell?
- how to create a monad that combines state and error in haskell
- universal quantification and unification, an example
- 'idiomatic' haskell type inequality
- what does core haskell applying types to functions mean?
- parsec: string choice parser with useful error messages
- how is it possible to collect all error messages in the either monad?
- printing dynamic data
- deconstructing an existential type
- something more to “monadic application”?
- type comparison in haskell
- haskell debug plugin in intellij
- acess a servant server with a reflex-dom client
- extract multiples html tables with hxt
- haskell - selectively adding lists
- list of any `datakind` in gadt
- replicate function for a length-indexed list using ghc.typelits and singletons
- forking the streaming flow in haskell-pipes
- put adjacent elements in list into tuples
- adding two functions together in haskell
- print empty list in haksell
- implementation of null function
- what is the equivalent to (+1) for the subtraction, since (-1) is seen as a negative number?
- let-renaming function breaks code
- can ghc warn if class instance is a loop?
- select random element from a set, faster than linear time (haskell)
- is the stack.yaml file supposed to be checked into version control?
- parsing unicodesyntax with haskell-src-exts
- have ghci list all possible type class instances?
- haskell import declaration
- why is a built-in function applied to too few arguments considered to be in weak head normal form?
- 'repeat' in haskell?
- why do these fixpoint cata / ana morphism definitions outperform the recursive ones?
- parsec how to find “matches” within a string
- liberal coverage condition introduced in ghc 7.7 breaks code valid in ghc 7.6
- haskell / persistent-sqlite: “no instance for (control.monad.trans.resource.monadresource io)”
- does haskell optimizer utilize memoization for repeated function calls in a scope?
- python-“is”-like equality operator for haskell/ghc
- stacking statet in scalaz
- how does the <<loop>> error “work” in detail?
- how to deconstruct an snat (singletons)
- haskell library import syntax
- why/how does recursive io work?
- what should i do if two modules share the same name?
- map over list, except for last list element
- why can't i re-use same value constructor among different data types?
- pattern match is redundant
- string to list of characters
- can i automatically implement classes?
- numeric.ad and typing problem
- how to combine lenses in “parallel”
- is there a way to use print with the formats of printf in haskell?
- perform simple io in haskeline, inside inputt monad, without having to resort to unsafeperformio
- how to override show instance of some basic types in haskell?
- haskell recursive function example with foldr
- dynamically generate haskell types at runtime?
- counters are initialized every time?
- why does map return an additional element when using ranges in haskell?
- haskell - packaging cabal package with custom preprocessors
- ghc complains about non-exhaustive patterns that are enforced by the type checker
- iterating through a string and replacing single chars with substrings in haskell
- format list output in haskell?
- help with cabal install package shadowing errors
- why are monoidal and applicative laws telling us the same thing?
- how is eq typeclass implemented for user defined types?
- simply typed lambda calculus with failure, in haskell
- using haskell ranges: why would mapping a floating point function across a range cause it to return an extra element?
- slightly generalizing unfold
- stuarray with polymorphic type
- why is an explicit type not required for basic prelude arithmetic?
- nubby is not working as expected
- streaming xml-conduit parse results
- haskell ghci - using eof character on stdin with getcontents
- haskell: possible fix: add (eq a) to the context of
- why is `stack build` altering my .cabal file?
- doing some basic calculus using reactive banana
- why this haskell code never terminates?
- automatic conversion of types for ffi calls in haskell
- monadexception instance is not deduced
- parentheses in the pattern matching in a function declaration haskell
- managing the io monad
- haskell - filter last element
- keeping io lazy under append
- how to use detailed-0.9 in cabal testing
- an heterogeneous indexed structure without existential types?
- packages, modules and import in haskell
- why will a io nested in other monads not execute? is there a way to force them to?
- split list and make sum from sublist?
- why doesn't haskell have a stronger alternative to eq?
- haskell: parse error on input 'putstrln'
- ghci - defaulting confusion
- what should a “higher order traversable” class look like?
- multiple lookup structures for same data: memory duplication?
- why does windows need withsocketsdo?
- why can't you (totally) apply a type synonym that has arguments using an other type synonym?
- how exactly does the `(<*>) = ap` applicative/monad law relate the two classes?
- preventing caching of computation in criterion benchmark
- what causes “error c ” in haskell usually
- haskell servant get current route / url from handler
- haskell/ghc performance of `any`/`all`
- make a typeclass instance automatically an instance of another
- what's the difference between `stack install name` and `name` in the build-depends of project.cabal file?
- solve cyclic dependencies in haskell data records
- haskell “no instance for” error
- variations of folds on haskell trees
- monad to also measure side effects
- output an element the number of times i want
- how to print the same char n times in haskell
- tcp server haskell string comparison
- partially apply several functions in haskell
- global variables via unsafeperformio in haskell
- ruby while loop translated to haskell
- lazy evaluation in haskell's do notation using the trace function
- no instance for (ord int) arising from a use of `>', haskell
- type of return in do block
- ghc: display of unicode characters
- yesod/persistent one-to-one query
- haskell : infinite list when integer is pushed to stack implementation
- how to produce infinity in haskell?
- project euler 8 - haskell
- can a typeclass constraint be used in a newtype definition?
- yesod's shakespearean templates (hamlet) and io
- io implementation inside haskell
- overload built in function in haskell
- optparse-applicative backtracking
- how can i figure out the line number where exception occured in haskell?
- greaters function define
- export haskell module with different hierarchy
- mismatch of rigid type variables
- parsec <|> choice in parser, error throws but does not go to next parser
- generating sorted list of all possible coprimes
- the difference between type and newtype in haskell
- implementation of inits using foldr
- monads, composition and the order of computation
- haskell foldr with function
- () in function variable and application
- no instance for (show (double -> double))
- baffled by selectonemany in yesod
- haskell show instance on list
- monad instance for pairs
- haskell : multiple declarations of “<function name>” …?
- haskell type coercion
- processing lists
- monaderror section in “all about monads”
- extracting database field values inside a handler
- associated parameter restriction using functional dependency
- haskell: instance definitions for type families
- explanation of the infix data constructor operator
- non-exhaustive patterns in haskell function
- splitting list into n-tuples
- how can i write this simple code using the state monad?
- how can i write this geq instance?
- why is there infinite recursion when i apply a function with the argument n-1 (no parentheses), inside the application of another function?
- plutus interpreter error in plutus playground
- space complexity of the following two lambda functions
- trouble with datakinds
- how can i sum a list of tuples in haskell?
- ambiguous type error & multiple different random values in the same function
- creating 2 dimensional list matrix
- cabal install cabal-install errors out on linux
- coordinates for clockwise outwards spiral
- issue while haskell instaling euterpea's dependency, hcodecs did not skip version check for a later version installed
- pattern matching equality on tuples in haskell
- haskell function :: [name] -> [[(name, bool)]]
- way on generating a truth table for arbitrary number of variables
- outputting the contents of a list of a custom data type
- declare all instances of a typeclass are in another typeclass without modifying the original class declarations
- how to ignore unclosed tags in xml or html?
- how can i compute a histogram in haskell?
- convert ptr () to sourcecompletionprovider
- showing a haskell list of tuples with custom syntax
- dispatching to correct function with command line arguments in haskell
- ambiguous occurrence in haskell with “show”
- does anybody know how to generate a grid in haskell?
- haskell : show instance ambiguity
- populating a list of tuples in a semantic way
- split a string by a chosen character in haskell
- how to plug this type hole 2
- is it safe to derive monadthrow, monadcatch, monadbasecontrol, monadunliftio, etc?
- product of list iteratively
- how to fix 'non-exhaustive patterns in function' error in haskell?
- how do i cast widget to label in haskell's gi-gtk?
- creating an instance of num class
- haskell recursive problem, tiny parser. a few things
- return a list of integer values that is not within a range of numbers in an existing list:
- haskell - searching through a list of pairs
- searching through list
- show instance for matrix in haskell
- is a section the result of currying?
- update a list of a list of elements in a single list?
- block until keypress or given time of day
- haskell use multiple functions inside of another function
- no instance for (fractional a0) arising from a use of ‘it’
- struggling with lists of lists in haskell
- haskell check if chess board diagonal movement is true or false [closed]
- haskell quickbatch testing: applicative monoid ziplist
- identifying number of words in a paragraph using haskell
- the lower value from a tuple of words and values in haskell
- haskell combine the elements of 2 lists at different index's
- how do i add x tuples into a list x number of times?
- rotate image .pbm haskell
- haskell filtering a nested list with data constructors
- not in scope: data constructor simple code
- haskell - creating a function definition for the function `all` using foldr
- permutations one symbol back, haskell [closed]
- what are the best haskell libraries to operationalize a program? [closed]
- what language to learn after haskell? [closed]
- good haskell coding standards
- machine learning in ocaml or haskell?
- what's the next step to learning haskell after monads?
- guards vs. if-then-else vs. cases in haskell
- what is the combinatory logic equivalent of intuitionistic type theory?
- what is haskell used for in the real world? [closed]
- how does non-strict and lazy differ?
- 'type family' vs 'data family', in brief?
- avoiding lift with monad transformers
- haskell vs. prolog comparison [closed]
- what are some interesting uses of higher-order functions?
- what are practical uses of applicative style?
- haskell: how to detect “lazy memory leaks”
- attoparsec or parsec in haskell
- what are haskell's strictness points?
- why is writing a compiler in a functional language easier? [closed]
- scala: difference between a typeclass and an adt?
- writing a parser from scratch in haskell
- haskell: lift vs liftio
- should i use ghc haskell extensions or not?
- what is pipes/conduit trying to solve
- is operational really isomorphic to a free monad?
- haskell function application and currying
- how to print integer literals in binary or hex in haskell?
- what is the difference between pattern matching and guards?
- what are the adjoint functor pairs corresponding to common monads in haskell?
- dependent types: how is the dependent pair type analogous to a disjoint union?
- is having a `(a -> b) -> b` equivalent to having an `a`?
- when is it ok to use an ioref?
- has anyone ever encountered a monad transformer in the wild?
- should i use a lexer when using a parser combinator library like parsec?
- what is the most production-level haskell to javascript compiler, to write code running in the browser? [closed]
- efficient heaps in purely functional languages
- safe modelling of relational data in haskell
- haskell - how to best to represent a programming language's grammar?
- is the monadic io construct in haskell just a convention?
- haskell monad bind operator confusion
- is there a haskell equivalent of oop's abstract classes, using algebraic data types or polymorphism?
- are all haskell functors endofunctors?
- how to run snap haskell webapp in production?
- distinctive traits of the functional languages
- how to write a haskell function that takes a variadic function as an argument
- tying the knot with a state monad
- haskell math performance on multiply-add operation
- how are c++ concepts different to haskell typeclasses?
- combine state with io actions
- can i extract a coq proof as a haskell function?
- what's really more performant? haskell or ocaml [closed]
- how do i do logging in haskell?
- when to use a type class, when to use a type
- haskell io and closing files
- why does haskell use mergesort instead of quicksort?
- what's the conceptual difference between machines and conduits (or other similar libraries)?
- lazy list of prime numbers
- what's new in quickcheck 2?
- what uses have you found for higher-rank types in haskell? [closed]
- what are zygo/meta/histo/para/futu/dyna/whatever-morphisms?
- what is so special about monads?
- is milner let polymorphism a rank 2 feature?
- when to use haskell monads
- reasonably efficient pure-functional matrix product in haskell?
- when is unsafeinterleaveio unsafe?
- efficient table for dynamic programming in haskell
- how do haskell compilers decide whether to allocate on the heap or the stack?
- is there any haskell-land equivalent to the ruby-land's bundler et. al and, if not, how would a project so structured be contrived?
- constraintkinds explained on a super simple example
- how to set a program's command line arguments for ghci?
- current state of integrating unit tests with haskell's cabal?
- generating llvm code for 'lambda', 'define'
- are ghc's type famlies an example of system f-omega?
- why do we need containers?
- exceptions in yesod
- what's the difference between undefined in haskell and null in java?
- how do i determine my ghc version?
- have you used quickcheck in a real project [closed]
- how to tell whether haskell will cache a result or recompute it?
- haskell module naming conventions
- looking for a web host that can handle haskell
- basic structure of a haskell program
- haskell stack install package dependency from github
- what is the difference between fix, mu and nu in ed kmett's recursion scheme package
- efficient queue in haskell
- is there an inverse of the haskell $ operator?
- foldr & foldl haskell explanation
- what are some examples of type-level programming? [closed]
- parsing json string into record in haskell
- what is monoid homomorphism exactly?
- implementing haskell's maybe monad in c++11
- are there any tutorials on building a simple interpreter using alex + happy?
- how to make my haskell program faster? comparison with c
- what is the c# equivalent of map function in haskell
- haskell interpreter on android? [closed]
- what is the advantage of using a parser generator like happy as opposed to using parser combinators?
- dependent types can prove your code is correct up to a specification. but how do you prove the specification is correct?
- interchange structured data between haskell and c
- are typeclasses essential?
- what is the relationship between ghc-pkg and cabal?
- can liftm differ from lifta?
- what is the difference between mapm_ and mapm in haskell?
- what does “pure” mean, in the context of programming languages and paradigms?
- how to add type annotation in let binding
- control.monad.state found in multiple packages haskell
- how can i view the definition of a function in haskell/ghci?
- prompting for a password in haskell command line application
- singleton types in haskell
- better way to define an enum in haskell
- how to shuffle a list?
- what's wrong with ghc haskell's current constraint system?
- understanding how either is an instance of functor
- am i using reactive-banana right?
- what is the kind of void?
- closures (in haskell)
- is there a quick-starting haskell interpreter suitable for scripting?
- complex data structures in haskell - how do they work?
- learning haskell: how to remove an item from a list in haskell
- is everything in haskell stored in thunks, even simple values?
- haskell parsec - error messages are less helpful while using custom tokens
- rewriting as a practical optimization technique in ghc: is it really needed?
- what's the reason of 'let rec' for impure functional language ocaml?
- composing two comparison functions?
- how to call haskell from javascript with ghcjs
- how does seq force functions?
- threading extra state through a parser in scala
- what self balancing tree is simplest in functional programming?
- generate function of given arity in haskell using type numbers
- showsprec and operator precedences
- python, ruby, haskell - do they provide true multithreading?
- c++ equivalent of algebraic datatype?
- how functional language are different from the language implementation point of view
- values, types, kinds,… as an infinite sequence?
- why do we need 'seq' or 'pseq' with 'par' in haskell?
- haskell plotting library similar to matlab
- which pretty print library? [closed]
- haskell: parsing command line arguments
- divide int to int and return int
- implementing lazy functional languages
- how, why and when to use the “.internal” modules pattern?
- why can't i use record selectors with an existentially quantified type?
- does the chain function in underscore.js create a monad?
- confusion over the state monad code on “learn you a haskell”
- why dollar ($) operator is so complex in ghc 8.0.1?
- why don't haskell compilers facilitate deterministic memory management?
- libraries for strict data structures in haskell [closed]
- what is the correct way to perform constant-space nested loops in haskell?
- is there a step-through debugger for haskell?
- using cont to acquire values from the future and the past
- how long pauses can occur in a haskell program due to garbage collection?
- why does performgc fail to release all memory?
- mapping over either's left
- haskell polymorphism and lists
- scoped type variables require explicit foralls. why?
- can scala's cake pattern be implemented in haskell?
- haskell equivalent to scala's groupby
- how to replace a string with another in haskell
- is it better to define functor in terms of applicative in terms of monad, or vice versa?
- generics and constrained polymorphism versus subtyping
- open type level proofs in haskell/idris
- creative uses of arrows
- n-queens in haskell without list traversal
- how do i use cabal's min_version_ and other macros with ghci?
- any way to print out a type of a variable in a do / while / let block?
- sbt-like features in the haskell build ecosystem
- how to define function signatures partially in haskell?
- why does multiplication only short circuit on one side
- ghc.generics or data.data?
- difference in performance of compiled accelerate code ran from ghci and shell
- haskell guards on lambda functions?
- how do i create an operator in haskell?
- what is the rws monad and when is it used
- how do i print a list in haskell?
- compiling very large constants with ghc
- what are super combinators and constant applicative forms?
- what are type quantifiers?
- is there any template haskell tutorial for someone who doesn't know lisp?
- haskell - how to avoid typing the same context over and over again?
- cannot create apply function with static language?
- why does ghc think that this type variable is not injective?
- how do i write a data.vector.unboxed instance in haskell?
- haskell singletons: what do we gain with snat
- expressive and composable error types
- working out the details of a type indexed free monad
- why does this simple use of the state monad cause a ?
- why can you reverse list with foldl, but not with foldr in haskell
- why can't i use io constructor
- how does haskell resolve overlapping instances?
- can haskell's control.concurrent.async.mapconcurrently have a limit?
- prime factors in haskell
- how to get a program's running time in haskell
- haskell version of yin-yang puzzle : kind incompatibility error
- is fc++ used by any open source projects?
- how to put mutable vector into state monad
- haskell: reusing fromjson instances with lenses, lens-aeson, and nested json
- prime sieve in haskell
- haskell n-ary tree traversal
- embedding higher kinded types (monads!) into the untyped lambda calculus
- how to pass state between event handlers in gtk2hs
- how are functors useful?
- string formatting in haskell
- writing a time function in haskell
- relationship between functor, applicative functor, and monad
- haskell: deriving show for custom type
- avoiding iorefs in pure code
- what's the difference between type and data type in haskell?
- why does this code using undecidableinstances compile, then generate a runtime infinite loop?
- how does 'undefined' work in haskell
- beginning haskell - getting “not in scope: data constructor” error
- how to parse an optional flag as a maybe value?
- how to make illegal values unrepresentable?
- relation between `dlist` and `[]` with codensity
- printing out haskell's evaluation (rewriting) steps for educational/learning purposes. is it possible?
- why do haskell type signature declarations have multiple arrows?
- round number to specified number of digits
- closed type classes
- how do you use typeapplications in haskell?
- haskell shying away from probabilistic data structures?
- are all differentiable types monads
- comparing lists in haskell, or more specifically what is lexicographical order?
- why isn't generalizednewtypederiving a safe haskell?
- how do i make a do block return early?
- adapting error to except
- what's so bad about overlappinginstances?
- understanding `ap` in a point-free function in haskell
- are there any ll parser generators for functional languages such as haskell or scala?
- nicely printing/showing a binary tree in haskell
- implementing functional programming in perl
- what's the difference between the “data” and “type” keywords?
- any real world experience debugging a production functional program?
- type classes in haskell data types
- difference between where bindings, let bindings and the single assignment operator (<-)
- since “fold” isn't powerful enough to write a tree pretty-printer with indentation, what high-order combinator is?
- select which test to run with hspec and stack
- what's the benefit of conduit's leftovers?
- view patterns vs. pattern guards
- how can haskell quasiquotation be used for replacing tokens on the haskell level?
- how to derive frp from directed acyclic graphs?
- how would you (re)implement iterate in haskell?
- can multiple dispatch be achieved in haskell with pattern matching on type classes?
- concurrent db connection pool in haskell
- does * in (<*>) have a special meaning?
- how to write an instance for all types in another type class?
- nested cartesian product of haskell lists
- `refl` thing in calculus of constructions?
- haskell/parsec: how do you use the functions in text.parsec.indent?
- how to functionally generate a tree breadth-first. (with haskell)
- how do you structure a stateful module in haskell?
- speed up haskell concurrency
- ghci not loading function from file
- how to generate a list of all possible strings from shortest to longest
- does f# have 'newtype' of haskell?
- haskell: scan through a list and apply a different function for each element
- pretty printing syntax tree with operator precedence and associativity in haskell
- how to avoid stack space overflows?
- typed abstract syntax and dsl design in haskell
- distributing a haskell program as c source
- examples of a monad whose applicative part can be better optimized than the monad part
- saving my running toplevel for later
- how to prevent common sub-expression elimination (cse) with ghc
- what causes “irrefutable pattern failed for pattern” and what does it mean?
- can record's field be matched with some value and assigned to a parameter at the same time?
- what is monadbasecontrol for?
- undefined at the type level
- why is factorial calculation much faster in haskell than in java
- haskell type signature with multiple class constraints
- inlining derived typeclass methods
- why aren't there existentially quantified type variables in ghc haskell
- overloading function signatures haskell
- haskell “collections” language design
- cleaner alternative to extensive pattern matching in haskell
- haskell infix function application precedence
- play a wav file with haskell
- translate from monad to applicative
- why do you have to use both a compiler flag and a run-time flag to get multicore-support in haskell?
- haskell precedence: lambda and operator
- is it possible to get all contexts of a traversable lazily?
- cross-compilation with ghc
- fully featured csv parser for haskell?
- why is concurrent haskell non deterministic while parallel haskell primitives (par and pseq) deterministic?
- how do you write the function 'pairs' in haskell?
- user state in parsec
- idiomatic way to sum a list of maybe int in haskell
- haskell rank two polymorphism compile error
- haskell type operator precedence
- building a dynamic library with haskell and using it from c++
- haskell parse error in pattern for n+k pattern
- can i provide the type-checker with proofs about inductive naturals in ghc 7.6?
- the “reader” monad
- standard way of joining two data.texts without `mappend`
- haskell: how to timeout a function that runs an external command
- tracking down errors in haskell
- structurally enforced free alternative, without left distributivity
- seething over msys shell - is it replaceable?
- how to combine case statement patterns
- optimising haskell data reading from file
- why aren't fingertrees used enough to have a stable implementation?
- “pattern matching” of algebraic type data constructors
- is it possible to list the names and types of fields in a record data type that derives generic?
- resolving ghc 'i found a duplicate definition for symbol …'
- how to make haskell or ghci able to show chinese characters and run chinese characters named scripts?
- proper way to treat global flags in haskell
- arbitrary json keys with aeson - haskell
- why do we need sum types?
- ambiguous occurrence
- examples of haskell applicative transformers
- explanation of numbers in haskell
- how should the general type of a “lemma” function be understood?
- unsafeperformio and ffi library initialization
- converting number base
- modeling the st monad in agda
- haskell: non-exhaustive-patterns
- access environment in a function
- against cold boot attacks: how to restrain sensitive information in haskell
- sparse arrays in haskell?
- how do i use the church encoding for free monads?
- breadth-first search using state monad in haskell
- experience reports using indexed monads in production?
- reactive-banana time delays
- a workaround for the “template haskell + c” bug?
- using parsec to parse regular expressions
- how to configure cabal in windows 7?
- using servant with readert io a
- how can i install a haskell library to be accessible via ghci with nixos?
- convert maybe int to int in haskell
- monadfix instance for interpreter monad transformer generated by freet?
- generating cartesian products in haskell
- how do inits and tails work in data.sequence?
- can't use a glade xml file with haskell
- using monads for trivial tasks like list manipulation?
- megaparsec: unable to parse recursive arithmetic string
- how do i make an heterogeneous list in haskell? (originally in java)
- regex & string libraries in haskell
- binding the result of a system command to a variable in haskell
- listing the paths to leaves in a tree
- can you formulate the insertion sort as a monoid in clojure?
- recovering from or heap exhaustion in a haskell program
- implementing the haskell-maybemonad in f# - how can we get this lazy?
- haskell input return tuple
- haskell polymorphic recursion with composed maps causes infinite type error
- is it possible to reorganize nested tuples?
- haskell ffi - can you obtain a c pointer from a haskell data structure?
- building with runtime flags using cabal and ghc
- using the maybe monad in “reverse”
- using higher-order haskell types in c#
- understanding this matrix transposition function in haskell
- why are if expressions frowned upon in haskell?
- proving “no corruption” in haskell
- haskell could not find module `system'
- ambiguous type variable `a0' in the constraints
- are monad laws enforced in haskell?
- creating instance of read type class in haskell for custom data type
- what is the effect of type synonyms on instances of type classes? what does the typesynonyminstances pragma in ghc do?
- why is numcapabilities a pure function?
- how do i make lenses from a record in ghci
- run-time exception when attempting to print a unicode character
- haskell - defining a function with guards inside a 'where'
- how to write ctrl-c handler in haskell?
- is there a scala operator similar to haskell's $ (dollar sign)?
- monad transformers with identity monad
- combining statet and state monads
- does data.vector replace data.sequence?
- where do quickcheck instances belong in a cabal package?
- is it possible to extend free monad interpreters?
- ghc refuses to export qualified modules
- more on generic scala functions
- why can't i add integer to double in haskell?
- haskell printf to string
- ghci ignores type signature
- how do i use runhaskell with cabal-dev?
- what are the relative merits of wxhaskell and gtk2hs?
- comparing haskell and scala bind/flatmap examples
- reactive-banana: firing event that contain the most up to date value of a behavior
- efficiency of equality in haskell
- what are uses of polymorphic kinds?
- how to detect a monad?
- why is there a value constructor in addition to the type constructor in haskell?
- pattern matching in observational type theory
- how to use hunit and cabal to do automated testing?
- the genuine sieve of eratosthenes — algorithm used to generate prime numbers
- could not deduce (eq a) from (num a) or from (floating a). but can deduce (eq a) from (integral a). why?
- how to upgrade ghc with stack
- what does fixio do?
- haskell — any way to qualify or disambiguate record names?
- defining function signature in ghci
- is it possible to use church encodings without breaking equational reasoning?
- why are boxed vectors so slow?
- list based on right kan extension
- in parsec, is there a way to prevent lexeme from consuming newlines?
- recursion schemes in agda
- can i disable the “non-exhaustive pattern matches” warning only for lambdas?
- code generation with scala
- is `data poe a = empty | pair a a` a monad?
- record types with multiple constructors in haskell
- using overloaded strings
- linking a dynamic library (libjvm.dylib) in mac os x (rpath issue)
- data.bytestring.lazy.internal.bytestring to string?
- is it usual for interaction nets to leave piles of redundant fans?
- what does the star mean in this haskell code?
- rankntypes and scope of `forall'
- haskell - loop over user input
- why `(map digittoint) . show` is so fast?
- non type-variable argument in the constraint error on haskell map function
- currying out of order in haskell
- haskell — ways to have a clean import block? (re-exporting modules? multiple imports per line?)
- fault tolerant json parsing
- is there any intuition to understand join two functions in monad?
- read until end of stream in haskell
- haskell type system nuances
- is it possible to use cmake for haskell projects?
- “cabal install cabal-install” doesn't update cabal version in osx
- time cost of haskell `seq` operator
- how to use the maybe monoid and combine values with a custom operation, easily?
- evaluation and space leaks in haskell
- why should we use behavior in frp
- filter a list of paths to only include files
- how can i avoid writing boilerplate code for functions performing pattern matching?
- how to get a pointer value in haskell?
- how do you use parsec in a greedy fashion?
- how to resolve overlapping instance
- observing lazyness in haskell
- lazy version of mapm
- which haskell library for computer graphics geometry?
- isomorphism lenses
- no speedup with naive merge sort parallelization in haskell
- store existing data-type with yesod's persistent
- how to get the declaration of a function using `reify`?
- using tls-extra for simple smtp
- using tchan with timeout
- how can i promote code reuse in a manner similar to mixins/method modifiers/traits in other languages?
- do inner bang patterns always force outer constructors in haskell?
- composition with dyadic operator?
- how to parse an array with haskell aeson
- emacs org-mode & literate haskell
- is there some standard haskell library dealing with process communication?
- haskell source encoding
- does d have 'newtype'?
- is hask even a category?
- indexing list with control.lens requires monoid constraint
- implementing iota in haskell
- how do i implement reader using free monads?
- summing a large list of numbers is too slow
- extending propositional logic to modal logic in haskell
- does there exist a monad instance for data.map / data.intmap?
- cabal install needs c library: windows
- templatehaskell and io
- haskell deriving mechanism for agda
- how to implement index-core style indexed continuation monad
- existential antipattern, how to avoid
- haskell string to list
- use of 'unsafecoerce'
- is there a way to use cabal to keep haskell packages up-to-date?
- why is this type variable ambiguous?
- hsc2hs: mutate a c struct with haskell
- fromenum toenum instance?
- haskell: generic ioref, mvar?
- testing in reactive-banana
- how do i do python-style indent/dedent tokens with alex/haskell?
- example of how to parse exiftool json output in haskell
- how to do complex io processing and implicit cache in haskell?
- how to implement binary numbers in haskell
- install haskell packages using cabal without internet connection
- is it possible to do a search on a graph constructed with the tying-the-knot strategy?
- how to send text to ghci process?
- haskell lists of datatypes
- erlang's term_to_binary in haskell?
- efficient haskell equivalent to numpy's argsort
- how do i apply inductive reasoning to `ghc.typelits.nat`?
- how do i make attoparsec parser succeed without consuming (like parsec lookahead)
- how can i build cabal-install on eeepc 701 / ubuntu netbook remix 1.6 (lucid)
- how to understand the state type in haskell's st monad
- breaking out of monad sequence
- why haskell list is more efficient if it's left associate
- use cabal2nix to create local nix environment for packages that aren't in nixpkgs
- haskell, aeson - is there a better way of parsing historical data?
- propagation of state monad
- regex-pcre on windows
- performing type equality in template haskell
- haskell - calculating the shortest path using trees
- are thread pools needed for pure haskell code?
- defining own ord for a data type
- what's the right way to divide two int values to obtain a float?
- how do i avoid writing this type of haskell boilerplate code
- what characters are allowed in haskell function names?
- fastest way to get the last element of a list in haskell
- why use null function instead of == [] to check for empty list in haskell?
- why does haskell not have an i monad (for input only, unlike the io monad)?
- is foldl ever preferable to its strict cousin, foldl'?
- what is the difference between `deriveanyclass` and an empty instance?
- elegant way to combine multiple filtering functions in haskell
- timing out pure functions
- get a sublist in haskell
- besides as-pattern, what else can @ mean in haskell?
- why constraints on data are a bad thing?
- stack's package.yaml vs stack.yaml
- what is the assumption made in “learn you a haskell” when deducing the kind?
- why is this simple haskell algorithm so slow?
- scala equivalent of haskell's do-notation (yet again)
- effects of monomorphism restriction on type class constraints
- what is the difference between a cyclic list and an infinite list in haskell?
- understanding filterm
- permutations of a list - haskell
- haskell reinstall base with profiling enabled
- how can eta-reduction of a well typed function result in a type error?
- blacklisting your own faulty hackage release
- haskell - let/where equivalent within list comprehension?
- what's the difference between partial evaluation and function inlining in a functional language?
- how to optimize this haskell code summing up the primes in sublinear time?
- many types of string (bytestring)
- why isn't `join` part of the `monad` class
- is it possible to make a type an instance of a class if its type parameters are in the wrong order?
- how do i handle the maybe result of at in control.lens.indexed without a monoid instance
- how to show that a monad is a functor and an applicative functor?
- can nullable be used as a functor in c#?
- how to upgrade gtk2hsc2hs?
- how are monoid and applicative connected?
- how to implement delete with foldr in haskell
- ghc version check in code
- pattern matching on rank-2 type
- what are all of the monad naming conventions?
- haskell flatmap
- xtypeoperators extension doesn't work as pragma
- what's the way to determine if an int is a perfect square in haskell?
- applicative is to monad what x is to comonad
- how to set ghci options for cabal repl?
- library to parse and check haskell code?
- how is foldl lazy?
- haskell gui programming tools
- haskell how to create a word8?
- haskell main function
- reactive-banana: how to create an addhandler?
- input checks in haskell data constructors
- c compiler selection in cabal package
- what is the preferred alternative to fin from idris in haskell
- using haskell's types to replace assert statements or if checks in other languages
- is there any guarantee about the evaluation order within a pattern match?
- what is representable used for in haskell?
- zlib build error with ghc
- what is the main difference between free monoid and monoid?
- using alex/happy with cabal
- is there a way to get a haskell setup on windows without an installation? (copy + paste)
- is there a way to chain functions like withcstring?
- does travis ci allow ghc versions larger than 7.8?
- can i get warnings about overly-restrictive type signatures?
- what is the difference between value constructors and tuples?
- creating a behavior for a continuously measurable phenomenon
- haskell: can't import system.random
- checking if a string consists of balanced parenthesis
- deliberately defining infinite type in haskell
- what about arrows?
- does each type have a unique catamorphism?
- what are the similarities / differences between control.observable and control.event modules in f#?
- how to fetch entity by `int` when a `key` is expected in the haskell persistent library?
- extent of ghc's optimization
- what's the idea behind haskell libraries throwing exceptions
- haskell equivalent of c# 5 async/await
- infinite list of infinite counters
- data constructor in template haskell
- generate a function using template haskell
- what's going on in this type signature? (vector.mutable modifiers in haskell)
- what are the differences between inline-c and language-c-inline?
- deriving instances with typefamilies
- mongodb example for yesod / persistent
- how to customize readline keybindings of ghci?
- when finding last but second element of a list, why is using `last` the fastest among these?
- displaying dynamically generated images in yesod
- optimizing haskell inner loops
- yesod: using typesafe urls in ajax calls
- transform a function with a typeclass constraint into a function taking an explicit typeclass dictionary
- using map with two lists rather than one. can you nest?
- is there a better way to convert from utctime to epochtime?
- haskell: thread blocked indefinitely in an stm transaction
- haskell: specifying equal-length constraints of lists in the type system
- generating html output from criterion
- how does hopengl behave with regards to other threads and tchans in haskell?
- haskell print while in recursion?
- an arrowcircuit instance for stream processors which could block
- how does one override show for a newtype?
- type constructor as return type
- type signatures that never make sense
- fix vs. arrowloop
- error while creating test suites: “cannot satisfy -package-id”
- can you make an instance of a class not for a type but for a whole class in haskell?
- conduit - multiple output file within the pipeline
- does haskell's foldr always take a two-parameter lambda?
- grouping data types by constructor in haskell
- haskell do clause with multiple monad types
- fusion law for foldr1?
- how do purely functional compilers annotate the ast with type info?
- why does the dot compose from right to left in haskell?
- ghci on raspberry pi 2?
- how to encode possible state transitions in type?
- get terminal width haskell
- defining partially applied typeclasses
- return json from yesod handler
- lookup query parameters in yesod
- what are the benefits of currying?
- stack.yaml file & .cabal file differences?
- weaken gadts type constraints to deal with unpredictable data
- haskell speculative parallel execution
- how to convert a rational into a “pretty” string?
- why does haskell appear to default to reading int when reading num?
- overriding frominteger in haskell
- make functions an instance of vector type class
- pure error handling in haskell with either: how to fold with error possibility?
- in haskell how do you extract strings from an xml document?
- how can i run my haskell functions through java
- haskell list of tuple search
- warning on specialisations when compiling haskell code with ghc
- remove every nth element from string
- nested datatype for square matrices
- truth tables from anonymous functions in haskell
- conditionally derive show for existential type parameterized on type constructor
- do errors occur in haskell?
- haskell persistent joins with esqueleto
- computing π to “infinite” binary precision in c#
- kinds of types in functions
- generalised newtype deriving on class functions with functors
- how can i tell cabal which dependency to use?
- convert from arrow notation
- is it possible to have an associated type synonym with variables not mentioned in the type class?
- export haskell lib as dll
- why is the tail call optimization not used in this haskell program?
- why is the factory pattern not needed in haskell? and how are the needs that pattern addresses in oop addressed in haskell?
- how can i generalize the arity of rxjava2 zip function (from single/observable) to n nullable arguments without lose its types?
- why can't i pattern match on the concatenation function (++) in haskell?
- haskell alex - error in wrapper template
- scripts to automatically manage imports or refactor modules
- how does <*> derived from pure and (>>=)?
- usefulness of “function arrows associate to the right”?
- how to use 'oneof' in quickcheck (haskell)
- searching for rewrite rules
- converting lowercase letters to capitals
- dynamic elements based on behaviour in threepenny-gui
- haskell stack build specific executable
- serve using your own binary on cedar, heroku
- haskell pipes - get return value of last proxy in pipeline
- frequency of characters
- get the root of a rose tree in haskell
- haskell calculate time of function performing
- what is reason not to use stack --nix when i using nix?
- how do i use wai-handler-devel with a simple wai application
- using haskell pipes-bytestring to iterate a file by line
- parsing haskell preserving comments / formatting
- haskell - illegal polymorphic type?
- haskell scala interoperability
- haskell - for loop
- controlling memory allocation/gc in a simulation?
- when is my haskell expression evaluated?
- converting functional dependency class to type family instances
- maybet and transactions in rundb
- finding the line number of a function in haskell
- how does the ghc garbage collector / runtime know that it can create an array `inplace'
- foreign key constraints in yesod/persistent?
- what is the suggested way of setting up haskell on archlinux?
- minimal purely applicative parser
- confusion over iorefs to make a counter
- join two consumers into a single consumer that returns multiple values?
- what is the meaning of parsec string () (string,string)?
- how to force ghc's profiler to step deeper into the libraries?
- haskell load module in list
- haskell: interact use causing error
- how can i represent data with optional fields at the type-level?
- can't find the error in my haskell code
- how do you save a tree data structure to binary file in haskell
- cabal fails updating of cabal-install
- searching rose tree in haskell
- what's the difference between a function and a functor in haskell? only definition?
- prime number generator with recursion and list comprehension
- what is the purpose of (const id) in this function?
- split bytestring on a bytestring (instead of a word8 or char)
- getting unique paths from list of tuple
- abstract result types in free monads
- self-reference in data structure – checking for equality
- how to generically extract field names and values in haskell records
- control thread to exit haskell application
- convert binary to decimal haskell
- scala's either not having `flatmap` & meaning of either.left/.right
- how to get make stats in constant memory
- de morgan's laws in haskell via the curry-howard correspondence
- working with list of tuples
- snap: inner/outer loops with heist
- how to write a function of type a-> b -> b -> b for folding a tree
- is map a function with two arguments?
- using threepenny-gui/reactive in client/server programming
- how do i validate arguments to a haskell “public safe” constructor?
- interleaving two strings, preserving order: functional style
- translate/encode haskell's `data obj = forall a. (show a) => obj a` in scala
- haskell label a binary tree through depth-first in-order traversal
- what would be a typical game skeleton in haskell [closed]
- is putstrln thread-safe?
- how can i disable haskell warning in small block?
- can you recognize an infinite list in a haskell program?
- how do i correctly use control.exception.catch in haskell?
- idris eager evaluation
- what is the derivation that shows haskell's \x -> (x, x) equivalent to join (,)?
- why are cabal reinstalls “always dangerous”?
- “resource busy (file is locked)” error in haskell
- integer to float
- in what scenarios does haskell's `reads` return more than one list item?
- why can't ghc derive instances for monoid?
- haskell — how to use multiple modules in the same file?
- haskell: yesno type class. why integer?
- powerset function 1-liner
- church lists in haskell
- does haskell have a greedy zip (one preserving all elements)?
- is it recommended to always have exhaustive pattern matches in haskell, even for “impossible” cases?
- haskell: check if two lists are equal
- what is the haskell standard library?
- functional proofs (haskell)
- trivial parsec example produces a type error
- lazy pattern matching in data.list
- why is this haskell code snippet not infinitely recursive?
- is there a good reason why `deleteby` does not have its most general type?
- what's with the 'in' keyword?
- control.parallel compile issue in haskell
- how to abort execution in ghci?
- how to get more performance out of automatic differentiation?
- where does the name “section” come from for a partially applied infix operator?
- pattern match list with exactly 2 elements in haskell
- ways to get the middle of a list in haskell?
- how do i pretty-print a table in haskell?
- killing a haskell binary
- type family shenanigans in ghci
- is dollar operator ($) considered bad form? why?
- why doesn't safe haskell support template haskell?
- when to exploit type inference in haskell?
- how to tell quickcheck to generate only valid list indices for a parameter?
- irrefutable pattern does not leak memory in recursion, but why?
- can this function be written in point-free style? if not, why?
- why do i see partial results with attoparsec when i expect to see failure?
- haskell dot operator
- haskell default io buffering
- tacit function composition in haskell
- can ghc unpack enumerations on strict data fields?
- how to count the number of times a function was called, the fp way
- type error when ascribing a valid forall type to a let-bound variable
- is it possible to get the kind of a type constructor in haskell?
- haskell multiple contexts - currying?
- how to catch a haskell exception that is thrown in a haskell callback function called by a c function?
- how to get variable name in haskell
- how can i use control.lens to update the ith element of a list?
- is it possible to get `-=` working with literals?
- is there an instance of monad but not of monadfix?
- haskell maps returning a monad
- parsing utctime with aeson
- how does one declare an abstract data container type in haskell?
- generically derive arbitrary for massive algebraic data types?
- in haskell, how do you restrict functions to only one constructor of a data type?
- interfacing haskell and c++
- is it possible to create php extensions in haskell?
- build fails because of “multiple definition” linker errors in native dependencies
- non type-variable argument in the constraint: monaderror failure m
- haskell -- dual personality io / st monad?
- where is .. defined?
- optimization of function calls in haskell
- what is the haskell way to copy a directory
- how is the type of `([] ==) []` inferred haskell?
- haskell rss, mail and xml library choices
- associate a function with a type in haskell
- sequence-like function which reports all the errors
- what is xnomonomorphismrestriction?
- number of arguments and point-free in haskell
- how do i install dependencies when cross compiling haskell code?
- haskell - strict vs non-strict with foldl
- how to get size of file in haskell using hfilesize
- how can i have more than 9 workspaces in xmonad?
- write a maximum monoid using maybe in haskell
- declaring instances of parameterized type synonyms
- why does my hunit test suite fail but pass successfully in cabal?
- why does this function seem to hide its embedded exception?
- how to use control.monad.state with parsec?
- i can't understand wikipedia's definition of "applicative functor"
- how lazy evaluation forced haskell to be pure
- is there a library or typeclass for getting the transformer version of a monad?
- what kind of morphism is `filter` in category theory?
- intrigued by (->) as instances of monad and functor
- link to a static file from hamlet
- list filter using an anamorphism
- haskell stack and c libraries
- how to let a function [a] -> [a] operate on [(a,int)]?
- is there any difference between "monadio m" and "monadbasecontrol io m"?
- monad for const?
- haskell magical code, what's going on here
- interesting operators in haskell that obey modal axioms
- what is the mathematical significance of "all (==1) [1,1..]" not terminating?
- the type signature of parsec function 'parse' and the class 'stream'
- derive ord with quantified constraints (forall a. ord a => ord (f a))
- how to parse a decimal fraction into rational in haskell?
- haskell sorting
- dealing with io vs pure code in haskell
- laziness and function composition (haskell, erlang)
- transform a gadt without constraints to another gadt with constraints when such constraints hold
- haskell: how lazy is the lazy `control.monad.st.lazy` monad?
- what is a simple way to wait for and then detect keypresses in haskell?
- convert list of integers into one int (like concat) in haskell
- how do laziness and i/o work together in haskell?
- silly duplicated record fields error
- mysterious cabal-install problems
- does haskell have foldlm'?
- is it possible to partially apply nth parameter in haskell?
- ghc can't find my cabal installed packages
- how does this list comprehension over the inits of itself work?
- foldr vs foldr1 usage in haskell
- evaluating a function at compile time with template haskell
- exact difference between div and quot
- in haskell, will calling length on a lazy bytestring force the entire string into memory?
- how do i putstrln a data.bytestring.internal.bytestring?
- how to construct generic functor instances using ghc.generics (or other similar frameworks)?
- categorical structure in haskell
- what effects are modeled by the stream (infinite list) monad?
- finding the missing 'reduce' typeclass from finger tree article
- find max element and index of a list in haskell
- read file with utf-8 in haskell as io string
- rankntypes: what is causing this error?
- compile haskell programs to c
- xmonad: spawnon workspace that had focus when spawn key was pressed
- how to work with types that change under composition?
- nix-shell as #! interpreter for runghc
- haskell: datastruture with o(1) append and o(1) indexing?
- generalizing fold such that it becomes expressive enough to define any finite recursion?
- what is the "coverage condition"?
- how does the presence of the "error" function bear on the purity of haskell?
- stuck in the state monad
- use list monad inside monad transformer type classes?
- haskell function nub inefficient
- haskell: list comprehension to combinatory
- why has "map (filter fst)" the type "[[(bool, a)]] -> [[(bool, a)]]"?
- don't know where to start with mutable vectors
- ghc-pkg check haddock warnings
- can't install eclipsefp as scion-browser cannot be installed as terminfo cannot be installed
- using ghci to find type
- how to use modifiers with quickcheck (positive in my case)
- execute monadio action inside of reactimate
- out of the box haskell plugin system
- haskell convert list to list of tuples
- how can i return a non-concrete value from a function that supports some api?
- how can i get ghc to generate instances of data.typeable for gadts with typeable in the context?
- type constraints for automatic function constraint deduction in haskell
- where clause applied to multiple patterns
- in haskell, why do i have to use the dollar sign in this code?
- trying to understanding why this function using foldr in haskell isnt working
- computer vision library for haskell
- haskell hello world, eclipse ide
- what type of scope does haskell use?
- how to handle "panic: the impossible happened" and continue in haskell
- how to compose functions that return bools to one function
- how to implement index-core style indexed state monad?
- why can't i install any packages with ghc 7.8.4 on raspberry pi?
- haskell - pattern match(es) are overlapped
- haskell generalizing problem (involving list comprehensions)
- haskell type and pattern matching question: extracting fields from a data type
- how do i write a constant-space length function in haskell?
- how do i replace nodes in hxt?
- why is [char]-based input so much slower than the [char]-based output in haskell?
- convert list of eithers to an either with a list in it
- bytestring linking in ghc
- any way to "visualize" a thunk/function? or how to view a function for a general argument
- why runstate signature has only state argument?
- design of interface abstraction
- haskell: does ghci show "chunk .. empty"?
- patterns for "symmetric" functions
- extracting coq to haskell
- tuple bang patterns
- reactive-banana throttling events
- how can i catch a 404 status exception thrown by simplehttp of http.conduit
- generic function composition in haskell
- commutative monoid from 'algebra' package on hackage
- gcf/lcm in haskell
- how do you implement monoid interface for this tree in haskell?
- haskell-stack: access violation error during build
- how do i use a monoid instance of a function?
- why doesn't stack add packages to the ghc package database?
- how do i determine type of haskell functions?
- why foldl is not short circuiting with andfn function?
- an operator symbol starting with a colon is a constructor
- "no instance for" error
- inverse of the absurd function
- canonical outer join zip function
- find tree height using folde function in haskell
- multiple flatmap methods for a single monad?
- in the yesod ecosystem, what is the best way to urlencode some text?
- how long should i expect a garbage collection to take before removing an opaque ffi object? is it possible to speed it up some way?
- using typeable to partially apply function at run-time (any time types match)
- haskell - apply tuple of functions to tuple of values?
- haskell, channels, stm, -threaded, message passing
- happy context-dependent operator precedence
- statically link a haskell program that uses c++ wrapper library
- haskell parsec parser for encountering [...]
- why won't ghc reduce my type family?
- gadts for a dsl: swings and roundabouts?
- how do i "unpack" a list as individual arguments in haskell?
- is there a point-free way to convert a conditional check into a maybe type of the input?
- why function composition sometimes requires two "." 's to combine two functions
- lazy list computed using mutable state?
- serializing a string with data.cereal or data.binary
- what is the difference between an operator and a function in haskell?
- point-free lens creation does not type check
- dynamic loading of haskell abstract syntax expression
- implement in haskell the church encoding of the pair for polymorphic λ-calculus/system f
- how do i maintain a server-side state with snap framework?
- haskell: recursively convert hex string to integer?
- clarification on lazy evaluation and its efficiency
- monomorphism restriction triggered when generic instance defined
- how to derive instances in recursion schemes
- test if haskell variable matches user-defined data type option
- making a custom monad transformer an instance of monaderror
- generalizednewtypederiving fails for persistfieldsql
- scotty monad transformer for per-handler reader
- haskell binary parsing
- "strategy pattern" in haskell
- importing haskell modules
- how to change tab-completed content at runtime in haskeline?
- playing with datakinds - kind mis-match errors
- the type signature of a combinator does not match the type signature of its equivalent lambda function
- what is wrong with this instance : arrowapply automaton?
- understanding kind of haskell class
- how to prevent inputs being flushed into output?
- generalized `fold` or how to perform `fold` and `map` at a time
- can anybody explain ghc's definition of io?
- logical and strictness with io monad
- memoized io function?
- understanding haskell function signature
- how do you convert from an unboxed vector to a js typedarray on ghcjs?
- hspec defined tests invoked with stack throw an error when test file is defined as a module
- corecursion and codata
- is there an inject equivalent for haskell in the context of free monads
- what time complexity does haskell's "tail"-function have?
- implementing an mfunctor instance for rvart
- restrict pattern matching to subset of constructors
- unifying types in haskell
- inclusion of typeclasses with default implementation in haskell
- how do i get cabal to bypass my windows proxy settings?
- what does haskell call the hom functor/monad?
- how can i handle operations over many different types in my dsl?
- counting the number of recursions
- haskell netwire: wires of wires
- fmap putstrln getline does not perform io
- redirecting haskell ghci output to text file
- church encoding for dependent types: from coq to haskell
- aeson: parsing dynamic keys as type field
- i cant import system.directory when using stack
- sum of fibonacci numbers
- unable to understand a mutual recursion
- how to "iterate" over a function whose type changes among iteration but the formal definition is the same
- how to parse string into gadt
- yesod auth: redirecting user to registration page
- glut error in haskell program
- state monad exampleproblem
- using type families and generics to find an id value
- what are the prerequisites for a point-free function in haskell
- write f in pointfree-style?
- plotting a graph using haskell
- reading yaml lists of objects in haskell
- haskell-way of modeling a type with dynamic json fields?
- is there a general way to tell the number of parameters of a function in haskell?
- getting "could not find module `yesod'" when i try to run first example from yesod book
- why has haskell troubles resolving "overloaded" operators?
- understanding function types
- how can i include an hamletfile inside another using widgetfile?
- list of existentially quantified values in haskell
- how to exclude dependencies when building haddocks?
- haskell fold rose tree paths
- how to use parsers from aeson with io
- why is it fair to think of just locally small cartesian closed categories in haskell for the curry class?
- generating subsets of set. laziness?
- converting bytes to int64s/floats/doubles in haskell
- converting haskell polymorphic cosine function to f#
- polymorphic recursion - syntax and uses?
- can't install and use cabal (haskell) on centos server - zlib-0.5.4.1 failed during the building phase
- what is the type signature of this haskell function?
- export template haskell generated definitions
- do i need to take explicit actions to facilitate sharing with persistent data structures?
- shelly: convert string to shelly filepath
- construct a pipes proxy inside-out
- picture how mapaccumr works
- function returning result of any constructor of a gadt
- why does `peek` with a polymorphic ptr return ghc.prim.any when used with a bind?
- haskell: improving my tail-recursive fibonacci implementation
- how do you make a functor instance of matrix and vector from hmatrix library?
- distance between points on haskell
- haskell facebook example
- deserializing data form a sql database
- is `pure x :: io a` a pure value or one with a side effect?
- lens zoom ambiguous variable
- how to return the next letter in the alphabet of given letter wrapped around in haskell [closed]
- haskell list comprehension for finding primes
- illegal instance declaration for typeclass tf
- how to instance eq without deriving
- avoid `unsafecoerce` with some `coercible` use case
- reducing space usage of depth first tree traversal
- how does the undecided generic type represents in ghci's runtime
- haskell record accessors shared by different constructors of the same data type
- select instance behavior at runtime
- how can i programatically produce this datatype from the other?
- why is arrowapply an only option when proving equivalence with monads?
- numerical issue with `foldl` and `foldr` in haskell
- how do you save a file using conduit?
- a show instance for undefined
- compare string contents in haskell
- ghc overlapping instances when generalising addition
- c2hs not getting installed / registered correctly
- record syntax: validate contents in constructor
- how do i make a list of substrings?
- lazy io - string not garbage collected?
- how can i pin a version of a haskell dependency to a version of an underlying native dependency with cabal?
- systemt compiler and dealing with infinite types in haskell
- haskell recursive minimax tree
- how to format numbers according to locale in haskell?
- implementing this monad/type in haskell?
- mutable, random-access array/vector with high performance in haskell
- simulate a path-dependent type in haskell
- how do you represent nested types using the scott encoding?
- how do you get getline to accept unicode characters?
- why there's not mapkeys in data.hashmap?
- pass a lens into a funciton
- why does "cabal init" break "ghc-mod check"?
- haskell - replace case with guards
- in haskell how do i get the number of bytes in a utf8 string?
- a lens for getting or setting a record field determined by a runtime argument
- how can i tell which libstdc++ double-conversion wants?
- how to retrieve output from a process without blocking the thread in haskell
- can i mock an interactive program using the state monad?
- issues using pattern matching with servant-client
- haskell: show and pretty-print instance
- aeson: derive some (but not all) fields of a struct
- lazy evaluation - space leak
- what is difference between .hi .p_hi and .dyn_hi files generated by ghc
- get column in haskell csv and infer the column type
- ambiguous type variable ‘b1’ arising from a use of ‘print’
- why parsec's sepby stops and does not parse all elements?
- use subsnaplet during snaplet initialization?
- gpg error when using 'stack upload'
- portable package installation on haskell platform with cabal on windows
- haskell 2-3-4 tree
- when are rpar and rseq expressions actually computed in haskell program?
- how to understand the "currying" in haskell?
- rankntypes doesn't match return type
- is it possible to have different behaviors for the same constructor?
- where to add 'always running' thread to yesod applications
- get input and pass variable from an if statement with haskell
- how to plot graph labels with haskell's graphviz package
- why will the following run in parallel rather than sequentially?
- installing sdl on windows for haskell (ghc)
- how do i output xmltrees in hxt?
- implementing skipwhile1 in attoparsec
- how to get my string repeated x times?
- how to read haskell type signature?
- workflow for using stack to test hackage packages (not in stackage)
- polymorphic functions as parameters in haskell
- state monad and 'put' function in haskell
- why isn’t this newtype being given the right read instance?
- convert text to unicode escape sequence
- haskell - how to write (.) f f = (\x -> f (f x))
- getting the length of a data.bytestring.builder
- check whether an integer (or all elements of a list of integers) be prime
- simple regular expression substitution crashes on windows using regex-compat
- what causes happy to throw a parse error?
- composing monadic functions with `<=<`
- why iseof doesn't work?
- why negative number in the following if condition throws error?
- maybe monad construction
- understanding type of `flip ($)`
- haskell parse error on input '|'
- using typeable to effectively case match against different types
- why can i use this "private" value constructor?
- does this haskell function memoize?
- snap web framework and osx path
- minesweeper board labels (beginner level)
- emulate "static dependent types" in haskell (if needed, with ghc extensions)
- performance of state in a certain case is slower than i would expect. why?
- how would i re-write this expression using the function composition (.) /application ($) operators?
- lazy filter with multi param function in haskell
- avoid recursion into specifc folder using filemanip
- function which takes a binary tree and prints out its values in order
- random walk on a pointed container
- snap framework root ("/") route not being handed?
- haskell cabal issue with mac os x 10.11? (cannot satisfy -package-id)
- what is the iform equivalent to fileaformopt?
- where is network.socket.bytestring.lazy's sendto?
- combining parsers in haskell
- snap framework: custom snaplet handler won't render template
- haskell: converting between typeclasses
- haskell recursion subsets
- optimization possible or use parallel computing
- calling a c opencv function from haskell
- isolate a single value from a nested json response in aeson
- using servant with yesod shakespeare (hamlet, julius, lucius)
- haskell formatting issue
- using stack ghc as replacement of ghc
- removing items from a list if a predicate holds
- haskell pointfree programming
- haskell compare all list items
- proof of the futamura projections in haskell
- haskell - make a function with one case difference from an other function
- use of `get` and `tosqlkey` in persistent
- representation of denotational semantics of primitive recursive functions [closed]
- error: non-exhaustive patterns in haskell
- how to consider previous elements when mapping over a list?
- haskell: use or uses in getter
- how does readsprec and the relative functions return [red] for read "[red]" :: [color]
- find combinations of all brackets in haskell?
- haskell : how to cast a data type to one of its specific typeclass?
- changing a graph to list of nodes in haskell
- generalizing from a specific type to a class in a gadt
- regarding (when executed) in haskell io monad
- haskell encryption program [closed]
- why were haskell 98's standard classes made inferior to haskell 1.3's?
- can using undecidableinstances pragma locally have global consequences on compilation termination?
- fixity of backtick operators?
- cabal install gtk failing
- not in scope data constructor
- why is the type of this function (a -> a) -> a?
- trying out "cabal sandbox init" and cabal not recognizing the command "sandbox"
- type variable would escape its scope
- cabal: build dir with source
- could not deduce (semigroup (optional a)) arising from the superclasses of an instance declaration
- why does let y = 1 + y compile, and what does it mean?
- what are gadts?
- why add "eq" type constraint without using "=="?
- what are some better ways to write [(-1,-1),(-1,0),(-1,1),(0,-1),(0,1),(1,-1),(1,0),(1,1)] in haskell?
- parsec: consume all input
- is using pattern names starting with "_" (underscore) for ignored results documented/encouraged/portable?
- turning a dict into a constraint
- haskell cabal regenerate documentation for all installed packages
- can haskell optimize function calls the same way clang / gcc does?
- what does it mean that the semantics (of haskell) are affected by the inferred types (of return type polymorphism)?
- creating monadbasecontrol instance for newtype
- what type corresponds to a xor b in type theory?
- purity of functions generating bytestring (or any object with foreignptr component)
- the difference between +1 and -1
- what is the type of return 5 in haskell when no context is given?
- haskell numbers and type system?
- why does my haskell do-notation break when i try to desugar it?
- haskell `forever` type signature
- what is the difference between isalpha and isletter?
- why is f <$> g <$> x equivalent to (f . g) <$> x although <$> is not right-associative?
- example of persistent with backend-specific operator
- having trouble understanding list comprehensions
- is there a difference between floor and truncate in haskell
- naming of `pure` function in control.applicative [closed]
- funny haskell behaviour: min function on three numbers, including a negative
- adding haskell's monadic bind operator to scala
- how safe is it to update base?
- segfault reading lazy bytestring past 2^18 bytes
- data.bytestring.lazy.char8 newline conversion on windows---is the documentation misleading?
- can i avoid "rightward drift" in haskell?
- space leak in pipes with rwst
- about 'pseq' in haskell
- mutual recursion in odd/even functions in haskell
- making read-only functions for a state in haskell
- haskell -- get typerep from concrete type instance
- haskell: could not find module `data.list.split'
- evaluate buffer in ghci or hugs via emacs
- summing over lists of arbitrary levels of nestedness in f#
- polymorphic pattern matching results in ambiguous type
- how to sleep or delay the thread in haskell?
- pattern matching of the form: option{..} <-
- how can i get rid of `let` in core?
- what is the meaning of the haskell operator "<>"?
- dead code and/or how to generate a cross reference from haskell source
- digestive functors with a variable number of subforms (snap/heist)
- multi-parameter type synonym instances
- why am i getting "non-exhaustive patterns in function..." when i invoke my haskell substring function?
- how can i persist the environment between ghci reloads?
- haskell function to reverse function call
- ghci special case for applicative?
- generating all the combinations of a set of boolean variables in haskell
- what is the correct contract of the function "map" in liquid haskell?
- haskell audio output on os x?
- python can make alphabet list like haskell?
- why does "(`subtract`) 1 2" fail?
- do the functor laws prove complete preservation of structure?
- would you ever write seq x x?
- how can configuration tools like sdl-config be used with a cabalized project?
- state and io monads
- type families extension does not work as described
- heterogeneous map
- problem specifying source directory to ghc
- lazy cartesian product in haskell
- how to circumvent ghc stage restriction?
- when can i bind a function to another name?
- installing haskell gloss
- comparing list length
- haskell logbase error
- thunk memory leak as a result of map function
- can i change the stack size limits from within the program?
- how can i determine if one enum value is the successor of another?
- haskell overlapping instances and type functions
- why do the types in `(fmap . fmap) sum just [1, 2, 3]` work?
- where does the `where` clause come in handy in haskell
- ieee floating point signalling nan (snan) in haskell
- haskell: use last reference to a variable to efficiently create a new variable
- data promotion syntax
- are there algebraic data types outside of sum and product?
- how to enable dead code warnings in haskell (ghc)
- why does mutual yielding make arrowapply and monads equivalent, unlike arrow and applicative?
- haskell io - hgetcontents: illegal operation (handle is closed)
- pass types as arguments to a function in haskell?
- type signature needs a type that isn't exported by the library
- switching workspaces in xmonad using programmer dvorak keyboard layout (shifted numbers)
- proving equivalence of sequence definitions from applicative and monad
- is it impossible to compute the difference between the maxbound and minbound of an enum type?
- rewrite rules not firing for rules matching multiple instance methods
- how fast is data.array?
- can't get cabal update to work inside corporate network
- how can i detect if ghc is set to generate 32bit or 64bit code by default?
- how can i combine the checkingfuelmonad with a state monad in hoopl?
- haskell: output non-ascii characters
- after upgrading to ghc7, all programs suddenly fail saying "most rts options are disabled. link with -rtsopts to enable them."
- making a constraint of maybe a where eq a
- taking sub-arrays in haskell
- equational reasoning with tying the knot
- is function a sort of variable?
- how to write this polyvariadic composition function in haskell?
- hasresolution typeclass
- why typeclasses instead of just pattern matching?
- haskell: shuffling data without functional dependencies
- is (fmap f) the same as (f .) if f is a function of type a->b?
- how to catch a divide by zero error in haskell?
- iterate + forever = iteratem? repeating an action with feedback
- ambiguous type variable `a0' arising from a use of `it'
- how to write special characters like new line, and format output of haddock
- memory usage of constructors in haskell
- examining the internals of the functions in haskell
- is there any "standard" way to utilize the equivalence of reader and a normal function?
- how to get a function to return different types
- how do `do` and `where` mix?
- more generic parfoldr than this
- haskell type length + 1
- haskell type annotation in function
- how to print comma-separated list with hamlet?
- how does sequencea work on lists of pairs?
- how are all graphic and web libraries implemented in haskell?
- listen on specific host using warp
- haskell equivalent of c's __line__
- haskell, range downto without step
- power series in haskell
- strange type inferencе with rankntypes extension
- control.monadplus.free without unnecessary distribution
- local maxima of list using fold
- remove white space from string
- haskell map for trees
- haskell: why is (+), (-) part of num typeclass?
- haskell first steps compile error
- cannot build a hello world program with stack because of flag bytestring--lt-0_10_4
- apply a function to every second element in a list
- haskell removes all occurrences of a given value from within a list of lists
- how does ghci print partially-applied values created from "pure"?
- can i have a value constructor named "/""?
- what is cabal hell?
- parsec.expr repeated prefix with different priority
- haskell infinite type
- growing arrays in haskell
- groupby-like function such that the binary predicate holds between consecutive elements of each group instead of any two
- examples of lazy evaluation techniques in perl 5?
- haskell state monad
- type ambiguity in haskell type families
- haskell random generation
- can i express a subclassing constraint?
- time complexity of memoized fibonacci
- why is guard based on alternative?
- is it possible for the presented case to be optimized into one loop?
- removing common haskell piping boilerplate
- haskell inaccessible code bug?
- exception: non-exhaustive patterns in function
- is it possible for pure functions in haskell to mutate local copies of variables?
- capabilities of criterion
- function composition and forall'ed types
- strongly typed events in haskell
- haskell : making a superclass of num
- what's the best way to represent a short bit string?
- datakinds and type class instances
- performing a single switch in reactive-banana
- install ghcjs from stack
- is there a straight-forward solution to receiving the element *prior* to hitting the dropwhile predicate?
- profiling multithreading performance in a haskell program — no speedups using parallel strategies
- haskell lexical layout rule implementation
- transducers in haskell and the monomorphism restriction
- what "contraint is no smaller than the instance head" means and how to solve it
- how to convert a bytestring to an int and dealing with endianness?
- a -> io b to io (a -> b)
- how to create symlink with haskell?
- why is the $! operator right-associative?
- cabal 1.18 gives bus error 10 on nearly everything on os x
- haskell to f# - declare a recursive types in f#
- complete pragma doesn't prevent incomplete-patterns warning
- haskell instanceof analogue?
- x <*> y <$> z in haskell
- filter list items by length in haskell
- how to get the text type?
- what to do if libraries require a different version of `base`?
- getting the head and tail of a custom list type in haskell
- haskell best practise: early termination in haskeline
- how can i stream test results with cabal new-test?
- understanding a case of haskell type-ambiguity
- undefined symbol in a hackage package `double-conversion`
- types for parser combinators
- how to create two bytestrings calling this external library api?
- using a monadic rank-2 type
- what is the semantic difference between "varid", "varsym" in haskell report?
- why is there no mapm for repa arrays?
- stack build on macos
- in ghci, how to remove an existing binding?
- clang error while installing quickcheck for ghc 7.8.3 on os x yosemite 10.10 (14a389)
- message box error : foreign import unsafe
- inputting data with haskell
- is there a way to script a ghci session?
- haskell defining functor instance for an alternative either data type
- how to sum over same indices of list of lists?
- record selectors in haskell's type classes
- find smallest nonnegative integer not in list in linear time, using only lists
- cabal can't use http proxy
- reading graphml in haskell
- combine st and list monads in haskell
- monadic alteration to tuple
- haskell beginner, trying to output a list
- stack space overflow when separating functions in different hs files
- parsing data with parsec and omitting comments
- haskell length function implementation
- arbitrary instance for timeofday
- haskell : unload module in winghci
- getting error when trying haskell-style lazy evaluation in scala
- why doesn't data.sequence have `insert' or `insertby', and how do i efficiently implement them?
- why am i getting a type error in this sequence of parsers (lecture 8 by erik meijer)?
- why is this implementation invalid?
- how do you translate from lambda terms to interaction nets?
- why isn't (->) implemented with control.monad.instances by default
- how to get haskell code after desugaring arrow syntax?
- fusion for length-indexed linked lists
- a serializable representation of a data type for client-server conformity checking
- building multiple executables in the default haskell stack project
- transitive closure from a list using haskell
- make readargs 1.0 work with a single argument
- why parse error? indentation?
- how to reverse an integer in haskell?
- pondering name of pattern seen in elm and if other similar cases
- improvement of the greedy algorithm
- type synonyms "not in scope" when using template haskell
- no stream fusion with unsafeupdate_ in unboxed vector
- yesod redirect to anchor on page
- how does haskell convert integer literals to different types?
- depend on test from bench
- get stack to pass test suite name as part of --test-arguments
- haskell: convert list to data
- monadtranscontrol instance for a custom monad
- stateful loop with different types of breaks
- order of type arguments in indexed vectors
- how to properly instantiate classes in haskell?
- either right left how to read value
- (edited) how to get random number in haskell without io
- lenses: composing backwards and (.) in lens context
- haskell partial function application with $
- define a constraint for multiple type variables
- what is the purpose of instance alternative io?
- why does odd.fst not work with the filter function?
- simpler way to deal with time and date?
- create a type that can contain an int and a string in either order
- how can one register a package built with cabal-dev?
- is there a good strategy to make a function a productive function?
- summing an integer tree (haskell)
- why `concurrently` is not a monad in haskell?
- evaluation of 'and' clause with regards to laziness
- cabal install wx missing c library
- error when updating cabal
- sieve of eratosthenes infinite list
- how can i move this instance method definition to class default?
- parsec-parser works alright, but could it be done better?
- fold for binary tree
- inverse of 'concat': transforming a flattened list into a nested list
- how to make a partial function?
- assign lists/tuples with do notation
- average of large number of dice rolls in haskell
- stack ghci not loading up local modules?
- haskell / smallcheck: how to control the `depth` parameter?
- deriving generic doesn't work even though derivegeneric is on
- c++ monad library
- the haskell way to do io loops (without explicit recursion)?
- implementing liftm2 in haskell
- do while loop in haskell
- does ghc-gc-tune 0.2.1 work with ghc 7.4.1?
- nested do syntax
- redefine list monad instance
- scopedtypevariables fail to work with nested where-clauses?
- count inversions: error in frege, works fine in haskell
- haskell performance optimization
- why does this instance fail the coverage condition?
- how to get the errno from an ioerror in haskell?
- stateful computation with different types of short-circuit (maybe, either)
- typeclasses without methods, used as constraints: do they get dictionaries?
- ambiguous types, and defaults for overloaded numeric operations
- a general way of comparing constructors of two terms in haskell
- what solutions are available if i apparently want to access to a hidden data constructor?
- haskell dividing num
- haskell tree to list - preorder traversal
- constructing minimal haskell example on error-handling in the state monad
- what are the space complexities of inits and tails?
- hiding versions of random from ghci
- type error while writing max function
- monad transformers: io and state
- what is the difference between ++ and : in haskell?
- using data.constraint.forall with equality constraints
- ghc type error which i do not understand
- parse recursive data with parsec
- random-pivot quicksort in haskell
- why is using quantifiedconstraints to specify a subclass of a typeclass also demanding an instance of the subclass?
- haskell - too few arguments
- fibonacci sequence generation
- how to mutate an stvector?
- how to add basic auth to scotty middleware?
- where to put the css file when using obelisk
- haskell (ghc) runtime memory usage or what do i do wrong
- syntax error on 'mod' haskell [closed]
- sitewide variables in yesod layout (django context processors analog)
- how can i configure cabal to use different folders for 32-bit and 64-bit packages?
- applicativedo not working with sequencing
- when are mvar operations guaranteed to be uninterruptible?
- resolving network.http 'user error (https not supported)'
- boolean operators over multiple elements
- using `foreign import prim` with a c function using stg calling convention
- inconsistent behavior with fromintegral in ghci
- order a list by the `snd` of a tuple within that list:
- haskell random cannot construct the infinite type: a1 = io a1
- why list monad combines in that order?
- recursive parser
- applicative's interchange law
- different behaviors of applicative on tuples and lists in haskell
- system.directory.getdirectorycontents unicode support
- how do i create a storable instance for this structure without c2hs or other tools?
- how to get the seconds and millisecond component from utctime?
- functional paragraphs
- how to flatten io (io ())?
- same kinds for list of int compared to list of int -> int?
- yesod -- password protecting staging site
- ghc heap profiling with -hy - what is * (star)?
- failed to install haskell-src-exts-1.16.0 on osx 10.9.5
- how to partition a list in haskell?
- how do i attach optional attributes to values?
- using mkstdgen from system.random to generate random booleans
- how many fmaps does it take?
- what is going on when i compose "show" and "read" in haskell?
- is it possible to enforce a type constraint on a class instance for a higher-kinded type?
- how do i use list monad inside of readert?
- 'main' function not found in module when using llvm bindings with haskell
- what does seq stand for in haskell
- how can i ensure amortized o(n) concatenation from data.vector?
- chaining two parentheses together using $ operator
- applying a (possibly unary) function recursively onto itself
- package versioning clashes in cabal
- take from a list while increasing
- using data.map in monadic context
- error: not in scope: type variable [haskell]
- applying a list to an entered function to check for tautology
- call a dll from haskell
- operator on do indentation
- text.xml.cursor - lost in the types
- non-monadic error handling in haskell?
- haskell recursive problem, tiny parser. negation of expr and let expressions
- haskell error: "non-exhaustive patterns"
- how can i use a constraint family that's in scope to prove instances within the body of an expression?
- state monad: how to `print` intermediate value in haskell
- easiest way to debug/visualize recursive function calls in haskell?
- understanding do notation for simple reader monad: a <- (*2), b <- (+10), return (a+b)
- what is the correct way to define an already existing (e.g. in prelude) operator between a user-defined type and an existing type?
- what's the difference between view and use in lens?
- dont understand whats on in this haskell code
- read instance causes parse error
- making custom instances of persistbackend
- two polymorphic classes in one function
- haskell :: recursion in recursion for loop in loop
- ambiguous occurrence `just'
- adding a constraint to a monad result type
- haskell, unnamed command line arguments for optparse-generic
- why regex match result diffrent when using text.regex.posix on ubuntu and windows,is that a bug?
- haskell nested where clause and "let ... in" syntax
- parsing multiple child nodes in haskell with hxt
- haskell returns how many inputs are larger than their average value
- how can i get cabal to install acid-state?
- haskell split a list into two by a pivot value
- fromjson instance with datakinds
- haskell - how to create a maptree function based on a foldr of a binarytree?
- how would i strip out comments from a file with parsec?
- how to define a timer rule in shake
- adding an ord instance to 'singleton' package generated naturals
- question about applicative and nested maybe
- how can this function be written using foldr?
- how do i translate this haskell to f#?
- consecutive pairs from list in haskell
- sort data.map by value and get all biggest values
- fail to define an infinite stream
- partially applied equality constraint
- haskell: deriving a list from a p-tree
- how do i remove every occurance of a value from a list in haskell using prelude?
- why isn't the list monad method for `>>` defined as `flip const`?
- writing category instance for custom lens
- defining restricted subset of storable for type match
- haskell function that takes out last occurrence of input character
- parsing many blocks with foldline
- how can i decode an encoded-word string?
- ghc truncating unicode character output
- haskell: why following run sequentially?
- why doesn't parsec backtrack when one part of the parser succeeds and the rest fails?
- how to get out of iterate loop when a condition is met?
- how to write a log2 function in liquid haskell
- haskell ui do clause, how to print?
- adding class constraints to typeclass instance
- using custom instance when deriving an instance via generalizednewtypederiving
- programming in haskell via opengl and glut
- haskell - couldn't match type ‘persistentitybackend record0’ with ‘sqlbackend’
- why doesn't this haskell code exhaust the heap?
- haskell: yesod and state
- haskell: remove largest list
- automatic functor instance
- identity of simulation objects in haskell
- installing reflex-dom likely to break ghcjs
- how does getargs work?
- i'm not sure i understand the type definition of the foldl function in haskell
- ordered arguments with cmdargs
- constructing haskell data types with many fields
- gtk2hs: request recalculation of windows size after removing a widget
- using quickcheck to generate multiple arbitrary parameters for a given function
- make ghci load and interpret a module with a "foreign export" declaration (for ffi with c)?
- haskell error: "no instance for (enum [int])
- cabal: conditionally override a flag default value
- problem with double and rational number
- how is `arr fst` a natural transformation?
- is there a name for this kind of lifting a function?
- haskell type definition, => etc
- type synonym causes type error
- implementing `traverse` and `sequencea`
- class restriction for type synonyms?
- why does haskell mode step on s-lower-camel-case and how does it do it?
- ambiguous type variable
- how to convert either to monadthrow
- traversing a graph breadth first, marking visited nodes in haskell
- infinite self-referencing list
- is there inherent "cost of carry" of garbage thunks in haskell?
- add with carry on word8