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January 16, 2016 19:43
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When not using return value, compiler issues a warning.
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| @warn_unused_result(message = "Use the result fuckathon") | |
| func area(height height: Double, width: Double) -> Double { | |
| return height * width | |
| } | |
| area(height: 2.0, width: 3.0) // Compile Error: Use the result fuckathon |
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