On: Programming languages, operating systems, despair ...

[kscaldef]

Good rant, but can we stop it with the "You need to understand category theory to do IO in Haskell" meme?

    main = do
       putStrLn "What's your name?"
       name <- getLine
       putStrLn ("Hello " ++ name)

Was that really so hard?

[eru → kscaldef]

Yes, it's easy.

(And a few bits of category do help when you are toying around with other typeclasses. Have a look at the typeclassopedia for an introduction.)