private func fixOverlaps(inout blocks: [TimeBlock],maxOverlaps: Int? = nil) {
    blocks.sortInPlace { a,b in
        if a.startTime < b.startTime {
            return true
        } else if a.startTime == b.startTime && a.endTime < b.endTime {
            return true
        }
        return false
    }
...

请注意,从XCode调试版本不会发生崩溃.只有App Store和Ad Hoc存档才会崩溃,只有当阻止列表的长度在数百上.

我修改了代码,问题消失了：

private func fixOverlaps(inout blocks: [TimeBlock],maxOverlaps: Int? = nil) {
    blocks = blocks.sort { a,b in
        if a.startTime < b.startTime {
            return true
        } else if a.startTime == b.startTime && a.endTime < b.endTime {
            return true
        }
        return false
    }
...

有没有想过如何使用inout或sortInPlace的东西？我可以尝试做一个这样的演示.它是在多个版本的iOS(8/9)和Swift 2.1.

编辑 – – – – – – – – – –

好的,这是一个崩溃的最小版本.原来,这是一个红色的鲱鱼.如果您在XCode 7.1中启动新的单视图项目,则可以使用以下命令替换视图控制器：

class ViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view,typically from a nib.

    var blocks = [TimeBlock]()
    for var i in 0...20 { //Works if you put in a small number like 8
        let t = TimeBlock()
        t.start = Int(arc4random_uniform(1000)) //Get some random numbers so the sort has to do some work
        t.end = Int(arc4random_uniform(1000))
        blocks.append(t)
    }

    blocks.sortInPlace { a,b in
        if a.start > b.start {
            return true
        }
        return false
    }

    print("done") //Gets here on debug,not release
}

class TimeBlock {
    var start = 0
    var end = 0
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}

所以运行它在发行版,你应该看到它打印“完成”,如果你结束循环约17,但崩溃与20完全数字可能会有所不同.