swift inheritace 继承

class Base {var base_x = 0static var base_y = 1final var base_z = 12func baseInc() {base_x += 1}class func baseMuti() {base_y -= 1}
}class Parent {func parentInc() {print("parnetInc")}
}class Child: Base {//属性也加overrideoverride var base_x: Int  {willSet {print("base_x 设置")}}//静态方法重写override class func baseMuti() {base_y -= 2}//base_z 被final 不能重写// override var base_z = 15
}var child = Child()
child.baseInc()//静态方法也继承
Child.baseMuti()
print(Child.base_y)//base_z 被final
child.base_z = 14
print(child.base_z)