Re:Ask HN: You have 1 week to get as good as possible at Rub...
by tra3 on Tuesday February 01, 2022 @11:20AM
(#30164673)
That's really neat. I like how it goes bottom up. I usually jump into dev with a new language and have to look up every function. This way you build up your knowledge of the language API from the ground up. neat.
http://rubykoans.com/