Created
December 22, 2017 16:44
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cleanup actions using defer
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| func readDesc(_ desc:inout String) throws { | |
| let newDesc = desc | |
| defer { | |
| desc = "" | |
| } | |
| throw SampleError.sample2(message: "cool error") | |
| print(newDesc) | |
| } | |
| var desc = "Life is cool and play is a tool!" | |
| try? readDesc(&desc) | |
| print("Empty: \(desc)") |
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