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May 9, 2017 07:18
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Save westerlund/1ea6f9a2c975a0b5ed8d11656cc96358 to your computer and use it in GitHub Desktop.
borrowed from https://github.com/JohnSundell/Unbox/ to prove a point
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| func orThrow<E: Error>(_ errorClosure: @autoclosure () -> E) throws -> Wrapped { | |
| guard let value = self else { | |
| throw errorClosure() | |
| } | |
| return value | |
| } | |
| // usage | |
| orThrow(UnboxError.invalidData) |
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