[swift-evolution] [Accepted and Focused Re-review] SE-0187: Introduce Sequence.filterMap(_:)

Gwendal Roué gwendal.roue at gmail.com
Thu Nov 16 00:07:35 CST 2017

> Le 16 nov. 2017 à 06:29, Matt Gallagher via swift-evolution <swift-evolution at swift.org> a écrit :
> My opinion is that filterMap is the right choice of name.
> I'm completely biased, given that I already have a Swift library that uses filterMap, in exactly this context, for a Reactive Programming library:
> 	https://github.com/mattgallagher/CwlSignal/blob/22f1d47895896d7b55bc59a4ee5394071f3c84cf/Sources/CwlSignal/CwlSignalReactive.swift#L453?ts=3 <https://github.com/mattgallagher/CwlSignal/blob/22f1d47895896d7b55bc59a4ee5394071f3c84cf/Sources/CwlSignal/CwlSignalReactive.swift#L453?ts=3>

Another popular Reactive Programming Library uses filterMap with a different signature, and a different meaning: https://github.com/RxSwiftCommunity/RxSwiftExt/blob/3.0.0/Source/RxSwift/filterMap.swift#L32

There are already different interpretations on "filter" in "filterMap" in the wild.

Gwendal Roué

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