Xcode Playground Timeline empty

Question

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

Answer 1

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: