日記
今日書いたコード
struct Point { var x = 0.0, y = 0.0 mutating func moveBy(x deltaX: Double, y deltaY: Double) { x += deltaX y += deltaY } } var somePoint = Point(x: 1.0, y: 1.0) somePoint.moveBy(x: 2.0, y: 3.0) print("The point is now at (\(somePoint.x), \(somePoint.y))") // => The point is now at (3.0, 4.0)
初めて知ったこと
:pear: