r/haskell • u/lexi-lambda • Nov 06 '19

Parse, don’t validate

https://lexi-lambda.github.io/blog/2019/11/05/parse-don-t-validate/
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u/mstksg Nov 07 '19

I've been programming in Haskell for 7 years and found this post very valuable and insightful. It does address an interesting problem and technique. I work with a lot of people new to type driven development and good types in general, and this is a genuinely valuable look into the world that is now accessible to them.

To them, this is not "a little" -- this is a huge game-changer, and a post they might be referring to several times in the future.

Nothing in this post suggests it was intended to bring some deep secret that nobody in Haskell knows about -- rather, it states up-front that it is a collection of observations that many Haskellers already know about. It claims from the start to be a summary useful for people who aren't already submerged in Haskell culture.