Simple message output with autoclosure
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| let debugEnabled = true | |
| func conditionalMessage(message:@autoclosure () -> String) { | |
| if debugEnabled { | |
| println(message()) | |
| } | |
| } | |
| func expensiveMessage() -> String { | |
| println("I’m expensive you know") | |
| return "Hello world" | |
| } | |
| conditionalMessage(expensiveMessage()) |
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