[swift-evolution] Change 'for in' expression to for [] { (item) in ... }

[Kwanghoon Choi]

yes, swift already has forEach, but from my point of view, there is an
uncomfortable part, like '(0..<10).forEach{}'. like Range type to need wrap
it in parentheses for using forEach.

my suggestion is not replacing 'for in [] {}' to 'for [] {}'. Can not we
have both? Of course, by erasing one before, it gave an environment to make
cleaner code easier for developers like me.

2017-07-29 1:38 GMT+09:00 Robert Bennett <rltbennett at icloud.com>:

> Isn’t this exactly like forEach, which is already in the language?
>
> > On Jul 28, 2017, at 12:32 PM, Jacob Williams via swift-evolution <
> swift-evolution at swift.org> wrote:
> >
> > This change would also make it so that for loops follow the same format
> as all other closures with variables.
> >
> > The downside is that this would break a TON of code. I don’t think that
> the amount of code this breaks would be worth the consistency. And as Alex
> mentioned, it is possible through .forEach
> >
> >
> >> On Jul 28, 2017, at 10:19 AM, Kwanghoon Choi via swift-evolution <
> swift-evolution at swift.org> wrote:
> >>
> >> Hello
> >>
> >> I found someone easy mistake using for in loop statement.
> >>
> >> Ex)
> >> var i = 0
> >> for i in 0..<10 { }
> >> print(i)
> >>
> >> And this user expected print(i) is “10”
> >>
> >> Many experienced swift developers doesn’t misunderstand like this. But
> always someone is new comers, and I think this expression make
> misunderstand easy too.
> >>
> >> So why not like this?
> >>
> >> var I = 0
> >> for 0..<10 { (i) in … }
> >>
> >> I think this is more understandable for loop expression.
> >>
> >> Best Regards
> >>
> >> - Jay Choi
> >> _______________________________________________
> >> swift-evolution mailing list
> >> swift-evolution at swift.org
> >> https://lists.swift.org/mailman/listinfo/swift-evolution
> >
> > _______________________________________________
> > swift-evolution mailing list
> > swift-evolution at swift.org
> > https://lists.swift.org/mailman/listinfo/swift-evolution
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.swift.org/pipermail/swift-evolution/attachments/20170729/defab581/attachment.html>