<div dir="ltr"><div class="gmail_default" style="font-family:georgia,serif">I think this should consider as a bug because the Xcode editor suggests the second way but the compiler can't compile.</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif">Zhaoxin</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jul 20, 2016 at 4:08 PM, Fabian Ehrentraud via swift-evolution <span dir="ltr"><<a href="mailto:swift-evolution@swift.org" target="_blank">swift-evolution@swift.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
I have a problem with tuple parameter types in a closure. Is this a language restriction or a bug in the Swift compiler? I used the Swift shipped with Xcode beta 3, also tried in Swift 2.2.<br>
<br>
let d: [Int: String] = [1:"1", 0:"0"]<br>
let e = d.sorted(isOrderedBefore: { e1, e2 in e1.0 < e2.0 }) // works<br>
let f = d.sorted(isOrderedBefore: { (k1, v1), (k2, v2) in k1 < k2 }) // does not compile<br>
<br>
<br>
Best,<br>
Fabian<br>
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</blockquote></div><br></div>