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Push Ifs Up And Fors Down
(matklad.github.io)
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this post was submitted on 17 Nov 2023
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Programming
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Seems more applicable to an imperative style, and IMO even still the advice is too dependent on special/actual case details to be generally applicable as a "rule of thumb".
This is just one specific example amongst many of how redundant logic could be simplified because sometimes the branch is an implementation detail and you want to push it down, and sometimes it's not and you want to push it up.