Swift and the Legacy of Functional Programming

Re:Swift and the Legacy of Functional Programming by pklausler on Monday November 21, 2016 @12:37PM (#13007214)

  let persons = [ p | n <- names
                    , p <- peopleNamed n
                    , isValid p ]

is even better, if your programming language has comprehensions.

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Re:Swift and the Legacy of Functional Programming by aninhumer on Monday November 21, 2016 @01:44PM (#13007929)

Eh, maybe for more complicated examples, but I think that comprehension is a lot more complicated than:

  filter isValid (map peopleNamed names)

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Re:Swift and the Legacy of Functional Programming by pklausler on Tuesday November 22, 2016 @12:56PM (#13015925)

Except that doesn't support multiple people with the same name.

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Re:Swift and the Legacy of Functional Programming by aninhumer on Tuesday November 22, 2016 @01:40PM (#13016342)

Well I was basing mine on the original. If peopleNamed in fact returns a list, then I'm not really sure what it's doing to create that? (I assumed your example was Haskell, in which case I don't think it can do anything particularly useful)

In any case, all you'd need to add is something like concat.

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