I am adding a computed property in extensions for my personal use, but sometimes I need this functionality in all number type values, how can I stop myself of repeating codes?
My goal is making just one extension for all number type.
extension CGFloat {
var powered: CGFloat {
get { return self * self }
}
}
extension Double {
var powered: Double {
get { return self * self }
}
}
extension Int {
var powered: Int {
get { return self * self }
}
}
You can extend Numeric
protoocol and return Self
:
extension Numeric {
var powered: Self { self * self }
}
CGFloat(3).powered // CGFloat 9
2.powered // Int 4
2.5.powered // Double 6.25
Decimal(5).powered // Decimal 25
Note that this is possible because Numeric protocol requires that the types that conform to it to implement *
and *=
operator functions.
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