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New posts in haskell
Why does `let foo = (fmap . const)` fail with "No instance for (Functor f0) arising from a use of `fmap'"?
Jun 19, 2022
haskell
type-inference
Bicategories in Haskell
Aug 08, 2021
haskell
typeclass
category-theory
Too many variables to run GHCJS program with Node
Jun 12, 2019
javascript
node.js
haskell
ghc
ghcjs
xmonad - switching workspaces with mouse buttons 6 and 7
Sep 04, 2018
haskell
xmonad
how to get "leftover arguments" in optparse-applicative?
Jun 16, 2022
haskell
command-line-arguments
applicative
Typeclasses in Haskell v. Scala
Dec 10, 2021
scala
haskell
typeclass
How does (co)recursive definition work in Haskell?
Jan 21, 2021
haskell
recursion
declaration
corecursion
efficiently reading a large file into a Map
Oct 19, 2022
performance
haskell
io
hashmap
attoparsec
Using record update syntax with constrained GADT records
Dec 08, 2021
haskell
record
typeclass
gadt
trace can give 'inversion' of processing in folds
Oct 01, 2016
haskell
What's the difference between `traceIO` and `hPutStrLn stderr`?
Mar 29, 2022
debugging
haskell
Modular equations in Haskell
Jul 17, 2017
haskell
equation-solving
modular-arithmetic
Haskell sets (0/0) as qnan
May 04, 2019
c++
haskell
floating-point
ieee-754
Does Backwards admit a Monad instance?
Sep 14, 2022
haskell
monads
Two functions compile with type annotations. Remove one annotation - doesn't compile. Remove two - compiles again. Why?
Oct 26, 2022
haskell
types
type-systems
More Descriptive Error Messages From GHC
Jun 13, 2021
haskell
indexing
error-handling
ghci
What GHC optimization is responsible for duplicating case expressions?
Sep 02, 2017
haskell
optimization
ghc
Analog of free monads for Profunctors
Jun 21, 2022
haskell
free-monad
profunctor
How to force GHC to evaluate static expression only once
Jul 13, 2021
haskell
optimization
How to deal with incomplete JSON/Record types (IE missing required fields which I'll later fill in)?
Dec 19, 2021
haskell
yesod
aeson
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