This should not be a keyword. Neither should it be part of the language.
Auto-completion (assuming you’re talking about that) is not a language feature.
It’s a feature of your editor/IDE. And thus it should be a default/setting
therein if at all.
Similarly Xcode tends to auto-complete "() -> ()”-closures as { () -> Void in …
}.
The “() -> Void in” not necessary in 99/100 cases. Still it shouldn’t have a
language keyword.
Instead Xcode should be smart enough to omit the “… -> Void in” or at least the
“ -> …”-part.
But again, this is a feature of your editor/IDE, not your language.
Thus I would recommend you to file a radar on it for Xcode to change its
default auto-completion behavior. ;)
> On 04 Jan 2016, at 13:45, QQ Mail via swift-evolution
> <[email protected]> wrote:
>
> Hi, All:
> trailing closure is good for most cases, but sometimes it is also make
> code unclear, for example:
>
> UIView.animateWithDuration(0.3, animations: { () -> Void in
> // animation code here
> }) { (Bool) -> Void in
> // completion code here
> }
>
> the label been removed and the code also not aligned well.
> I would like to write like this:
>
> UIView.animateWithDuration(0.3,
>
> animations: { () -> Void in
> // animation code here
> },
> completion: { Bool -> Void in
> // completion code here
> }
> )
>
> It is possible, just every time you have to write it manually. It’s a little
> wast.
> So I have a thought, since we already know this function is not well suit for
> trailing
> closure, can we add a attribute to disable it, for example:
>
> extension UIView {
>
> @disable_trailing_closure
> public static func animateWithDuration(duration:NSTimeInterval,
> animations:()->Void, completion:()->Void) {
> // implementations ...
> }
> }
>
> I also found another one have issue for this too. link:
> http://www.natashatherobot.com/swift-trailing-closure-syntax/
> <http://www.natashatherobot.com/swift-trailing-closure-syntax/>
> what do you think?
>
> Best Regards
>
> ChenYungui
>
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