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A couple of weeks in my case. It's not any more difficult than remembering that the -> is the cache-miss operator in C++.

You also don't have to learn the entire universe of Haskell before being productive in it. I still have no idea what profunctors, comonads, and other things are and I'm shipping production Haskell code.



If you follow the link to the second article of the series, you’ll see that the author does dump all upfront, hence the question.

A couple of weeks to understand the terse operators (ab)used everywhere in Haskell code is horrendously long time, if you ask me.




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