Regards (From mobile)
> On Jun 14, 2016, at 7:16 PM, David Waite via swift-evolution > <[email protected]> wrote: > > I’m a bit late to this conversation, and I don’t totally understand the goal. > > There are a *lot* of things you can do in for…in loop with pattern matching > that also would supposedly go against this interpretation of approachability. > Pattern matching in general might be considered to go against this > interpretation. > > Is this pitch saying statements such as: > > for i in 1..<100 where i%2 == 1 {…} > > should be disallowed, while statements like > > for case let view? in views { … } > > are still approachable enough to warrant being supported in the language? > > FWIW, I wouldn’t support removing where based on current arguments without > either the keyword “where" being eliminated completely from the language, > and/or adding equivalent intuitive functionality to Sequence with same-class > performance, e.g. a .where(...) equivalent to .lazy.filter(…). > > I’ve known about and used the feature since it was first added to Swift > (learned via the language book), and don’t fully understand the confusion > that some developers may have - especially since ‘while’ is already a keyword > and could have been used if that was the actual semantics. > > -DW > >> On Jun 14, 2016, at 10:32 AM, Xiaodi Wu via swift-evolution >> <[email protected]> wrote: >> >> And from the WWDC Platforms SOTU: "Swift is super simple and >> approachable.... It's great as a first language. And in fact, we think this >> is so important that when we designed Swift this was an explicit design >> goal." Yup... Doesn't bode well for power users... "Swift.. Address your needs from 7 till 77... unifies the entire family" >> I would be absolutely against adding any more sugar to the for loop. In that >> sense, `where` sets a terrible example that certain features of sequences >> deserve contextual sugar. (And before someone points it out again, I've >> already argued why `for...in` holds its own weight, namely difficulty of >> writing a correct `while` replacement and progressive disclosure to the >> learner so that the concept of iterators can be learned afterwards.) >> >> In short, I would very much be opposed to adding keywords "for fun." > > _______________________________________________ > swift-evolution mailing list > [email protected] > https://lists.swift.org/mailman/listinfo/swift-evolution
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