Swift中类的操作

普通类的定义和使用

class Person{

var name:String = String()

var age:Int = Int()

func getInfo(){

println(” (name) (age)”)

}

}

var person = Person()

person.name=”郭艳璐”

person.age=12

person.getInfo()

//类的构造和析构 init deinit

class Person{

var name:String

var age:Int

init(name:String,age:Int){
self.name = name
self.age = age
}

func getInfo(){
println(" \(name)   \(age)")
}

deinit{
name=nil
age = 0
}

}

var person = Person(name: “郭艳璐”, age: 20)

person.getInfo()

//类的继承

class Guo:Person{

}

var guo = Guo(name: “郭艳璐”, age: 20)

guo.getInfo()

//重写方法

class Guo:Person{

override func getInfo() {
println("重写的方法\(super.name)  \(super.age)");
}

}

var guo = Guo(name: “郭艳璐”, age: 20)

guo.getInfo()

class Guo:Person{

override var name:String{
get{
return super.name;
}

set{
if(self.name=="郭艳璐"){
super.name="郭艳璐的super"
}else{
super.name="super name"
}
}
}

override func getInfo() {
println("重写的方法\(super.name)  \(super.age)");
}

}

var guo = Guo(name: “郭艳璐”, age: 20)

guo.getInfo()