> On 30 Nov 2016, at 10:38, Седых Александр via swift-users
> <swift-users@swift.org> wrote:
>
> Assume we have this code:
>
> Immediately two Timer's closures captured two copy of initial values of
> instance Test, with internal num values is 0.
>
> //: Playground - noun: a place where people can play
>
> import UIKit
>
> var str = "Hello, playground"
>
> struct Test {
> var num = 0
> mutatingfunc newNum(new: Int) {
> num = new
> }
> }
>
> var test = Test()
>
> Timer.scheduledTimer(withTimeInterval: 1.0, repeats: false) { (timer) in
> print("tick")
> test.newNum(new: 8)
> }
>
> Timer.scheduledTimer(withTimeInterval: 2.0, repeats: false) { (timer) in
> print("tack, test.num = \(test.num)")
> }
>
>
> CFRunLoopRun()
>
>
>
> We have next log:
> tick
> tack, test.num = 8
>
> Why Timer's two closure return to us value 8 and not 0?
Because the first timer changed the value to 8 when it expired one second
before.
>
>
>
> --
> Седых Александр
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