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Alexander Granin graninas

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graninas / holmes_code_riddle.js
Created November 26, 2022 20:27
Sherlock Holmes and a Code Riddle
View holmes_code_riddle.js
<!DOCTYPE html>
<script src=""></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);
graninas / itbeard_poems.txt
Last active June 20, 2022 09:20
Стихи для конкурса у АйТиБороды
View itbeard_poems.txt
айтишечка и в африке айтишечка
а я питоняш, и пишу на нем код наш
иногда на пхп, выдаю я выхлоп кнеш
View FDaA SE CH2 listing
--ghc 8.0.2
type ThermometerName = String
type BarometerName = String
data Method
= ReadThermometer ThermometerName
| ReadBarometer BarometerName
| ReportTemperature
| ReportAtmospherePressure
graninas /
Last active March 12, 2021 13:12
Творчество сообщества itunderhood
graninas /
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

graninas /
Last active March 24, 2023 17:02
What killed Haskell, could kill Rust, too

At the beginning of 2030, I found this essay in my archives. From what I know today, I think it was very insightful at the moment of writing. And I feel it should be published because it can teach us, Rust developers, how to prevent that sad story from happening again.

What killed Haskell, could kill Rust, too

What killed Haskell, could kill Rust, too. Why would I even mention Haskell in this context? Well, Haskell and Rust are deeply related. Not because Rust is Haskell without HKTs. (Some of you know what that means, and the rest of you will wonder for a very long time). Much of the style of Rust is similar in many ways to the style of Haskell. In some sense Rust is a reincarnation of Haskell, with a little bit of C-ish like syntax, a very small amount.

Is Haskell dead?

graninas /
Last active December 10, 2020 23:53
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)
graninas /
Last active March 16, 2023 03:49
Haskeller competency matrix

Haskeller Competency Matrix

See also List of materials about Software Design in Haskell

Junior Middle Senior Architect
Haskell level Basic Haskell Intermediate Haskell Advanced Haskell Language-agnostic
Haskell knowledge scope Learn you a Haskell Get programming with Haskell Haskell in Depth Knows several languages from different categories
Get programming with Haskell Haskell in Depth Functional Design and Architecture
[Other books on Software Engineering in Haskell](
View gist:8f43592d51d62ebbcb2b212e74eb7ee5
data User = User
{ firstName :: String
, secondName :: String
-- The User data type has field firstName, it's a string.
-- firstName :: User -> String
-- secondName :: User -> String
graninas /
Last active February 5, 2022 23:11
Appendix to Software Design in Haskell