Real World Haskell - Why Purity Matters

My two favorite books on functional programming (FP) are, Learn You a Haskell for Great Good and Real World Haskell (RWH). This quote from RWH was a real eye-opener for me. In the programming book industry’s rush to create Scala/FP books, a lot of what I’ve read sounds like, “I’m new to FP but blah blah blah monad blah blah,” but if you can make it through Haskell’s syntax, these older books are very good. This quote in particular was a real mind opener.

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