This topic has been discussed at the following article
Modelisation of basic Sets theory by Swift
Notice :
Scope of operator overloading in Swift is global ,let's suppose in our ViewController:
struct myVector{
var x:Int
var y:Int
}
func + (left:myVector,right:myVector)->myVector{
return myVector(x:left.x+right.x , y:left.y+right.y)
}
class ViewController: UIViewController
2.prefix,infix,postfix
When overloading prefix you need to declare operator before
prefix operator +++{}//declare operator
prefix func +++ (x:Int)->Int{
return (x+x+x)
}
