Tuesday, September 27, 2022 [Tweets] [Favorites]

Debug Printing in Swift

Jordan Morgan:

For debugPrint()… Things look a little bit different. Its output is strikingly similar to the print(), but it has a fully qualified print out.

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However, if the type doesn’t conform to [CustomDebugStringConvertible] - then String(reflecting:) dips down into CustomStringConvertible, which you’ve likely used in your Swift adventures.

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For Mirror(reflecting:) This one is quite easy to understand, but can be incredibly useful. In short, you’re getting an instance’s type information.

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Using dump you can print out entire class hierarchies and type information. In short, it gives you all the freakin’ information it can find about whatever you pass to it.

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