Xcode Playground 时间轴为空 [英] Xcode Playground Timeline empty

问题描述

我正在尝试在 xcode 7.3.1 版中使用时间线助手编辑器作为操场，它始终为空.

要显示时间线图，您可以使用XCPCaptureValue:

导入XCPlayground无功x = 0对于我在 0...10 {x += i打印(x)XCPCaptureValue("x 的值", value: x)}

但 XCPCaptureValue 已被弃用，将来将无法使用(没有

右键单击图表，您可以选择显示历史值:

I am trying to use the timeline assistant editor for playground in xcode version 7.3.1, it is always empty. Timeline assistant editor

I think the error is from xcode, however from search it doesn't look like anyone got the same error so i am confused.

解决方案

To display the result of print you need to open the "debug area" by going to menu

View > Debug Area > Show Debug Area

or click on the button in the lower left part:

To display the timeline graph, you could use XCPCaptureValue:

import XCPlayground

var x = 0
for i in 0...10 {
    x += i
    print(x)
    XCPCaptureValue("Value for x", value: x)   
}

but XCPCaptureValue has been deprecated and won't be available in the future (there's no available replacement).

The alternative is to display the graph inline by clicking on the "+" button on the right:

Do a right click on the graphs and you can choose to display value history instead:

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