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What is AnyObject?

Swift version: 5.4

Paul Hudson    @twostraws   

This is one of those things that sounds obvious in retrospect: AnyObject is Swift's way of saying, "I don't mind what type of object you pass in here, it could be a string, it could be a string, it could be a number, it could be an array, or it could be a custom type you defined yourself.

If you were wondering: the reason numbers work even though they clearly aren't objects is because Swift silently makes them objects when they need to conform to AnyObject. Magic!

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This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.

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