如何使Playground执行时间与在iOS应用程序中运行一样快

I see that playground execution speed is not reliable. For example with a code:

我看到游乐场的执行速度不可靠。例如,使用代码:

import UIKit
var count = 0;

let startTime = NSDate()
for i in 1...10000 {
   count++
}
let endTime = NSDate()

let interval = endTime.timeIntervalSinceDate(startTime)

the value of interval is about 2s, which is not reliable. With the release of Swift 2.0 & XCode beta 7, is it possible to make swift playground code execute as fast as in iOS application?

间隔的值约为2s,这是不可靠的。随着Swift 2.0和XCode beta 7的发布,是否可以像在iOS应用程序中那样快速地执行游戏代码?

1 个解决方案

#1

There's a workaround thanks to the Sources folder of the Playground.

由于Playground的Sources文件夹,有一个解决方法。

You can either use the menu to add external files:

您可以使用菜单添加外部文件:

New > Add files to sources

新建>将文件添加到源

or go to menu:

或转到菜单:

View > Navigators > Show project navigator

查看>导航器>显示项目导航器

and drop a .swift file in the Sources folder.

并在Sources文件夹中删除.swift文件。

To be accessible, your code in this folder has to be public:

要访问此文件夹中的代码必须是公共的:

public class PlayGround {
    public class func count() {
        var count = 0
        for i in 1...10000 {
            count++
        }
    }
}

Then it's as usual in the Playground itself:

然后就像Playground本身一样:

let startTime = NSDate()

PlayGround.count()

let endTime = NSDate()

let interval = endTime.timeIntervalSinceDate(startTime) // 0.0062