运算符重载
Swift的这一语言特性或许应该启发于C++
class Vector2D {
var x : Float = 0.0
var y : Float = 0.0
init (x : Float, y: Float) {
self.x = x
self.y = y
}
func +(left : Vector2D, right: Vector2D) -> Vector2D {
let result = Vector2D(x: left.x + right.x, y: left.y + right.y)
return result
}
}
测试代码如下:
let first = Vector2D(x: 2, y: 2)
let second = Vector2D(x: 4, y: 1)
let result = first + second
// = (x:6, y:3)
转载于:https://www.cnblogs.com/davidgu/p/5346075.html
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