How can I print to console in Swift Playgrounds on iPad?

Question

I would like to debug a method deep inside my \"Sources\" folder within a Swift Playground.

public func wannaDebugThis         


        

Answer 1

This feature has been added to Swift Playgrounds version 3.4 on iPad

Answer 2

In order to write debug messages from the iPad to the console, NSLog() has to be used.

public func wannaDebugThis() {
    let x = 42
    let text = "Debug message with useful information: x = \(x)"
    NSLog(text)
}

The output of NSLog() can be found under the process named ExecutionExtension in Console.app on macOS. The output of print messages is only shown as <private>, which can be seen on attached screenshot.

Answer 3

While I couldn‘t find a way to modify an Empty/Blank Playground to provide console in-/output. There is the „Answers“ template, that you can use for simple console interactions.

Another way is to use the „Interactions“ template, provided here: https://buildingrainbows.com/2018/03/13/print-to-the-console-in-swift-playgrounds-for-ipad/