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Swift

Escaping closures

This code doesn't compile. What is the compiler asking for?

final class Loader {
    var handlers: [() -> Void] = []
    func register(_ handler: () -> Void) {
        handlers.append(handler)
    }
}

Your answer

Memory and ARCMultiple choiceBasics
Which of these two snippets creates a reference cycle? …
#closure #capture
Memory and ARCShort answerAdvanced
What actually happens in memory when a closure captures an outside variable? Using the ou…
#closure #capture
SwiftMultiple choiceBasics
Which of these statements about Swift language rules are correct? Pick all that apply.
#closure
ArchitectureShort answerIntro
Can you explain the Delegate pattern that shows up all over UIKit?
#closure