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phamquochoan/Increase or decrease enum's raw value operators

Created March 21, 2015 10:50
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Increase or decrease enum's raw value by one point if it's kind of FloatingPoint or Integer
Raw
Increase or decrease enum's raw value operators
postfix func ++ <T: RawRepresentable, V: FloatingPointType>(lhs: T) -> V {
return (lhs.rawValue as! V) + 1
}
postfix func -- <T: RawRepresentable, V: FloatingPointType>(lhs: T) -> V {
return (lhs.rawValue as! V) - 1
}
postfix func ++ <T: RawRepresentable, V: IntegerType>(lhs: T) -> V {
return (lhs.rawValue as! V) + 1
}
postfix func -- <T: RawRepresentable, V: IntegerType>(lhs: T) -> V {
return (lhs.rawValue as! V) - 1
}
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