> On Nov 20, 2017, at 12:22 PM, BJ Homer <bjho...@gmail.com> wrote: >> On Nov 20, 2017, at 10:09 AM, Drew Crawford via swift-evolution >> <swift-evolution@swift.org <mailto:swift-evolution@swift.org>> wrote: >> >> The typical case for this function in my code is the identity closure, that >> is >> >> let a: [Int?] = ... >> print(a.filterMap {$0}) >> >> filterMap is quite poor for this situation because *each* component in the >> term is inaccurate: > > filterMap is indeed an awkward name for this use case, just like flatMap is. > In my experience, about half of my use cases use the identity closure, and > half actually make use of the closure in a meaningful way. I would support a > proposal to add something like Sequence.dropNils (actual name to be > determined), and then we could let this proposal target the > non-identity-closure use case.
If the identity closure (i.e. "please remove the nils from this sequence") is a common use case, then I absolutely agree that we should consider adding a specific operation for that, and that name might illuminate the right name for the mapping version. John.
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