[xondono]

I’ve tried a lot of those, even contributed to exercism. I think it has it’s uses, but you can only extract value from those exercises once you know enough about a language.

For me those exercises are more about developing muscle memory than really learning a language.

OPs idea is good, but I think fails in the same way. I don’t think you’ll get much value out of reading PRs until you have certain familiarity. No amount of PRs will teach you what a monad is, you need to dive deep and conceptually understand the model(at least IMO).