Recent questions tagged functional

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functional programming - "Closures are poor man's objects and vice versa" - What does this mean?

Closures are poor man's objects and vice versa. I have seen this statement at many places on the web ( ... include examples in your answer. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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functional programming - How can you do anything useful without mutable state?

I've been reading a lot of stuff about functional programming lately, and I can understand most of it ... constantly, without mutable variables. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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functional programming - Why doesn't outer work the way I think it should (in R)?

Prompted by @hadley's article on functionals referenced in an answer today, I decided to revisit a persistent puzzle ... length of object [1] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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functional programming - Is Haskell truly pure (is any language that deals with input and output outside the system)?

After touching on Monads in respect to functional programming, does the feature actually make a language pure, or is ... in the purity stakes. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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functional programming - Why no Array.prototype.flatMap in javascript?

flatMap is incredibly useful on collections, but javascript does not provide one while having Array.prototype. ... defining flatMap manually? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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