Online Swift Compiler (Editor)

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main.swift

enum Bar { case a case b } func foo(bar: Bar, action: () -> Void) -> Bar { action() return bar } var actionBar: Bar! let resultBar = foo(bar: Bar.b) { actionBar = resultBar print("Assigned") } print(actionBar == resultBar) // 👈 false print(actionBar) // 👈 Optional(DemoProject.Bar.a)

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Swift Online Compiler