A Haskell proof of concept of validation with partial data round trip

added by DotNetKicks
12/21/2020 5:16:13 PM

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Which Semigroup best addresses the twist in the previous article? This article is part of a short article series on applicative validation with a twist. The twist is that validation, when it fails, should return not only a list of error messages; it should also retain that part of the input that was valid.


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