Whoops didn’t check that your example worked as well :D
-- Adrian Zubarev Sent with Airmail Am 22. Mai 2016 bei 10:27:17, Adrian Zubarev ([email protected]) schrieb: This should do the trick: extension SignedNumberType { var sign: Self { if self == (0 as Self) { return (0 as Self) } else if self > (0 as Self) { return (1 as Self) } return (-1 as Self) } } -- Adrian Zubarev Sent with Airmail Am 22. Mai 2016 bei 09:08:37, Adam Nemecek via swift-evolution ([email protected]) schrieb: Howdy, I think that the SignedNumberType should implement a method called sign that will return -1 for negative numbers, 0 for 0 and 1 for positive numbers. This is similar to the signum method in e.g. Java and similarly called methods in other languages. The implementation is fairly straight forward extension SignedNumberType { var sign: Self { if self == 0 { return 0 } else if self > 0 { return 1 } return -1 } } I was trying to implement is without branching by doing (x > 0) - (x < 0) but I couldn't get the types right so I'm open to suggestions. _______________________________________________ swift-evolution mailing list [email protected] https://lists.swift.org/mailman/listinfo/swift-evolution
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