1HaskellADay @1HaskellADay

A short Haskell algorithmic puzzle, each day. Puzzle at Midnightish EST (GMT-5) Answer at 11pm EST (GMT-5) logicaltypes.blogspot.com/p/1haskelladay… U.S.A. Joined February 2014

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1HaskellADay @1HaskellADay

4 years ago

#1Liner #Haskell problem. You have: \k _v -> f k Curry away the arguments.

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ephemient @ephemient

4 years ago

@1HaskellADay Map.intersectionWith const map $ Map.fromDistinctAscList [(k, ()) | k <- Set.toAscList set]

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@dysinger @1HaskellADay You could use Map.fromDistinctAscList/Map.toAscList for better performance (keys are already sorted), but there's no need as there's Map.filterWithKey (\k _ -> Set.member k set) map

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gabby @GabriellaG439

4 years ago

I'd like to know if people find the Haskell community welcoming or unwelcoming I acknowledge that this is not a scientific poll and "welcoming" is not clearly defined. Also, feel free to leave comments elaborating on your answer

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gabby @GabriellaG439

4 years ago

It's Friday, so you know what that means: Mods are asleep. Deploy experimental changes to prod

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1HaskellADay @1HaskellADay

4 years ago

Hello, all. It's been a minute. Here's a #1Liner #Haskell problem You have m :: Map a b You want to filter it by s :: Set a so that m has keys only in s. How would you do that?

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Igor Os @IgorOs6

4 years ago

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Algebra Etc. @AlgebraFact

4 years ago

If p is prime, all the coefficients in (a+b)^p except the first and last are divisible by p.

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0ch4rl3s.nfo @acid2

4 years ago

Them: nooooo you can't just generate SQL from Haskell! Rel8: hahaha monad go brrrr

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Computer Science @CompSciFact

4 years ago

A computation that appears to require 32 multiplications can be done in 15.

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Computer Science @CompSciFact

4 years ago

New post: Faster quaternion product rotations johndcook.com/blog/2021/06/1…

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Computer Science @CompSciFact

4 years ago

Minimum criteria for a language to be Turing complete cs.stackexchange.com/questions/991/…

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Frank de Jonge @frankdejonge

4 years ago

Learning a language other than PHP will make you write better PHP.

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Functor Fact @FunctorFact

4 years ago

'The essential virtue of category theory is as a discipline for making definitions, the programmer’s main task in life.' -- D. E. Rydeheard

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Algebra Etc. @AlgebraFact

4 years ago

Ring theory database ringtheory.herokuapp.com

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Joël Quenneville @joelquen

4 years ago

Fun FP tip: if you have a `fold` function defined for a tree, then the infamous interview question "invert a binary tree" becomes a one-liner! Here's an example in #elmlang

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José A. Alonso @Jose_A_Alonso

4 years ago

Undecidability and incompleteness of second-order logic. ~ Mark Koch. ps.uni-saarland.de/~koch/bachelor… #ITP #Cog #Logic #Math

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Javier Neira @jneira

4 years ago

Happy to announce the new version of haskell-language-server, 1.2.0 * limited support for GHC 9.0.1 * support for GHC 8.10.5 * many fixes and new features for wingman github.com/haskell/haskel…

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Vanessa McHale @vamchale

4 years ago

I don't use git. I don't even store code in files. I just remember it and re-type every time.

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Probability Fact @ProbFact

4 years ago

'This branch of mathematics [probability] is the only one, I believe, in which good writers frequently get results entirely erroneous.' -- Charles Sanders Peirce