swift class

//: Playground - noun: a place where people can play

import Cocoa

var str = "Hello, playground"

class Person {

var age:Int;//类成员变量默认是public

var name:String?;//?表示可以为nil或没有设置，name是可选的

init(age:Int,name:String){

self.age = age;

self.name = name;

}

func getAge()->Int{

return age;

}

func getName()->String{

return name!;//!表示可以返回nil

}

class func person()->Person{

return Person(age: 30,name: "Xuhuiz");

}

class func maxAge()->Int{

return 200;

}

}

var v1 = Person(age: 1,name: "zxh");

println("\(v1.age),\(v1.name)");

var v2 = Person.maxAge();

var v3 = Person.person();

v3.age = 29;

println(v3.getAge());