This is, I would argue, much too limiting in the way of semantics and not at all required by “map”. It’s unclear to me how _any_ result with reference semantics or any function with side effects could be used in a way that comports with that definition.<br><br>On the other hand, just as y = 0x is a function, { _ in Foo() } is a closure that very much does project from a domain to a range. I’m not sure I understand what wins are to be had by having “collect {}” as a synonym for “map { _ in }”.<br><br><div class="gmail_quote"><div dir="ltr">On Thu, Aug 17, 2017 at 16:01 Erica Sadun via swift-evolution <<a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div><br></div><div><blockquote type="cite"><div>On Aug 17, 2017, at 12:04 PM, Max Moiseev <<a href="mailto:moiseev@apple.com" target="_blank">moiseev@apple.com</a>> wrote:</div><br class="m_3317284721246939440Apple-interchange-newline"><div><div style="word-wrap:break-word"><br><div><blockquote type="cite"><div>On Aug 17, 2017, at 10:05 AM, Erica Sadun via swift-evolution <<a href="mailto:swift-evolution@swift.org" target="_blank">swift-evolution@swift.org</a>> wrote:</div><br class="m_3317284721246939440Apple-interchange-newline"><div><div style="word-wrap:break-word"><div>Also, for those of you here who haven't heard my previous rant on the subject, I dislike using map for generating values that don't depend on transforming a domain to a range. (It has been argued that `_ in` is mapping from `Void`, but I still dislike it immensely)</div></div></div></blockquote><div><br></div><div>Can you please elaborate why (or maybe point me at the rant)? </div></div></div></div></blockquote></div><br><div><br></div></div><div style="word-wrap:break-word"><div>Summary:</div><div><br></div><div>. Since this application is a generator and not a transformative function, `map` is a misfit to usage semantics. It breaks the contract that map means to project from a domain to a range via a function. More languages conventionally use `collect` than `map` to collect n applications of a generator closure</div></div><div style="word-wrap:break-word"><div><br></div><div>-- E</div><div><br></div></div>_______________________________________________<br>
swift-evolution mailing list<br>
<a href="mailto:swift-evolution@swift.org" target="_blank">swift-evolution@swift.org</a><br>
<a href="https://lists.swift.org/mailman/listinfo/swift-evolution" rel="noreferrer" target="_blank">https://lists.swift.org/mailman/listinfo/swift-evolution</a><br>
</blockquote></div>