class Parrot:Bird, Pet {
override required init(name: String) { //感覺override在前更好,因為定義時父類在前,協議在后
super.init(name: name + " " + name)
}
override required init(name: String) { //感覺override在前更好,因為定義時父類在前,協議在后
super.init(name: name + " " + name)
}
2017-09-25
Swift 中循環里添加步長改為:
for i in stride(from: 0, to: 10, by: 2) { //to為開區間,through為閉區間
print("Stride 2")
}
for i in stride(from: 0, to: 10, by: 2) { //to為開區間,through為閉區間
print("Stride 2")
}
2017-09-24
swift3 需要將inout放到參數類型前面
func +=( left: inout Vector3, right: Vector3){
left = left + right
}
func +=( left: inout Vector3, right: Vector3){
left = left + right
}
2017-09-12