Escaping closure captures non-escaping parameter 'action'

Question

billypoydar OP

Created Jun ’20

Replies 1

Boosts 0

Views 3.7k

Participants 2

Here is my code:

Code Block swiftfunc animateFlipCard( _ action: (() -> Void)) {
        UIView.animate(withDuration: 0.5, delay: 0, options: [.autoreverse], animations: {
            self.cardView.transform = CGAffineTransform(scaleX: 0.001, y: 1)
            DispatchQueue.main.asyncAfter(deadline: .now() + 1) { action() }
        }, completion: {_ in
            self.cardView.transform = CGAffineTransform.identity
        })
    }

I get the error "Escaping closure captures non-escaping parameter 'action'" on lines 2 and 4. What am I doing wrong and how can I fix this?

Answered by junkpile in 617512022

Had a reply all typed out, switched tabs, switched back and it’s all gone. !@$* new forums.

You should be able to fix it by marking that action parameter as @escaping. It has to be marked as such because the parameter goes out of scope before the closure is executed.

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Answer 1

junkpile OP

Jun ’20

Accepted Answer

Had a reply all typed out, switched tabs, switched back and it’s all gone. !@$* new forums.

You should be able to fix it by marking that action parameter as @escaping. It has to be marked as such because the parameter goes out of scope before the closure is executed.

1