I was happily println
ing to the Console Output in the Assistant Editor of a Swift/Xcode 6 Playground (see this SO thread for more info), until I decided to try clicking the [X] to close the Console Output.
How do I bring the Console Output back??
This eluded me for a while, too. You want View menu -> Assistant Editor -> Show Assistant Editor.
Once you see the pane that holds the console output, if you still aren't seeing the right thing, make any change that will cause a println()
to fire and the console output should appear.