What does it mean when code is “easy to reason about”?
Preethi Kasireddy

This is excellent! I’ve been on a personal quest to learn what functional programming is all about, and the term “no side effects” had a similar ambiguity + ubiquity problem for me. You just saved me some time by linking it all together! Now if you could Part II this with idempotency, we’d be up to snuff with the JavaScript zeitgeist.

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