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graninas / haskell_design_patterns.md
Last active September 2, 2023 13:47
Haskell Design Patterns

Design patterns in Haskell

This is a list of patterns. I'm collecting this list with an idea to write a book similar to the GoF book.

My patterns:

  • Typed / Untyped pattern
  • Typed Avatar pattern (see Hydra and Node)
    • Typed Options pattern (see EulerHS)
  • Control Structure pattern (see CLI control structure in Hydra and similar in Node)
{-# LANGUAGE AllowAmbiguousTypes #-}
module Test2 where
import Control.Monad.Free
import Control.Monad
data BreadType = Baguette | Toast
deriving (Show, Eq, Ord)
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graninas / On_hiring_haskellers.md
Last active March 25, 2023 16:49
On hiring Haskellers

On hiring Haskellers

Recently I noticed the number of the same two questions being asked again and again on different Haskell resources. The questions were “How to get a Haskell job” and “Why is it so hard to find Haskellers?” Although these two are coming from the opposite sides of the hiring process, the answer is really just one. There is a single reason, a single core problem that causes difficulties of hiring and being hired in the Haskell community, and we should clearly articulate this problem if we want to increase the Haskell adoption.

We all know that there are many people wishing to get a Haskell job. And a visible increase of Haskell jobs looks like there should be a high demand for Haskellers. The Haskell community has also grown like crazy past years. But still, why is it so difficult to hire and to be hired? Why can’t companies just hire any single person who demonstrates a deep knowledge of Haskell in blog posts, in chats, on forums, and in talks? And why do Haskell companies avoid hirin

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graninas / holmes_code_riddle.js
Created November 26, 2022 20:27
Sherlock Holmes and a Code Riddle
// https://www.tutorialspoint.com/online_processingjs_editor.php
<!DOCTYPE html>
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/processing.js/1.6.6/processing.min.js"></script>
<script type="application/processing" data-processing-target="pjs">
dW = 4; dH = 20; dWH = dW/2; dHH = dH/2;
gSh = dWH/2; r = dW/sqrt(2); fs = 2 * (dH);
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graninas / itbeard_poems.txt
Last active June 20, 2022 09:20
Стихи для конкурса у АйТиБороды
https://www.youtube.com/watch?v=fhMVCRWpNVc&ab_channel=%D0%90%D0%B9%D0%A2%D0%B8%D0%91%D0%BE%D1%80%D0%BE%D0%B4%D0%B0
igroykt
айтишечка и в африке айтишечка
а я питоняш, и пишу на нем код наш
иногда на пхп, выдаю я выхлоп кнеш
@graninas
graninas / appendix-to-software-design-in-haskell.md
Last active February 5, 2022 23:11
Appendix to Software Design in Haskell
--ghc 8.0.2
type ThermometerName = String
type BarometerName = String
data Method
= ReadThermometer ThermometerName
| ReadBarometer BarometerName
| ReportTemperature
| ReportAtmospherePressure
@graninas
graninas / itunderhood_creations.md
Last active March 12, 2021 13:12
Творчество сообщества itunderhood
data User = User
{ firstName :: String
, secondName :: String
}
-- The User data type has field firstName, it's a string.
-- firstName :: User -> String
-- secondName :: User -> String