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Parse, don’t validate
(lexi-lambda.github.io)
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this post was submitted on 09 Feb 2024
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Programming
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Yes! The concepts are intertwined. I think the key take away, for me, is to lean heavily into your type system and allow that to do some of the heavy lifting. Accept that something like a
usernameis not a string, but a subtype of a string (this has to be true if any validation is required, otherwise you'd just accept any valid string).