Definition and use of Swift-class

main.swift//classdemo-06//import foundationprintln ("Hello, world!")    Class definition person Name class person{//define a field age var age:int = 0;        Define a field name//? Indicates that name is null nil or not set name is optional var name:string?;        Construction Method Init () {//without the number of references age = 5;        Name = "Baidu";        Create an object with an initial value}//This construction method takes two parameters of name, age init (name:string,age:int) {self.age =;        Self.name = name;    [Self xxxx];//xxxx ();    } deinit{//destructor Dealloc own active call} func getage ()->int {return age;    }//member Method instance method func GetName ()->string{//! can return nil return name!;    }//The class method and an object do not have a relationship starting with class is the method classes Func MaxAge ()->int {return 200;    }//Ability to create object class func person ()->person{return person ()    }}func TestClass () {//Declares an object var xiaoming = person ();    Xiaoming.age = 100;    The Swift field is public//println ("Xiaoming \ (xiaoming.age)"); println ("Xiaoming \ (xiaoming. Getage ()) and name is \ (xiaoming.name) ");    var maxAge = Person.maxage ();        println ("Max Age is\ (MaxAge)");    var Xiaoli = Person.person ();    Xiaoli.name = "Xiao Li";        println ("name is \ (xiaoli.name)");    Constructor two tags must write//normal function First label No Thanks, # The second one must write var Xiaowang = person (name: "Xiao Wang", age:18); println ("Xiaowang is\ (xiaowang.name) age is \ (xiaowang.age)");} TestClass ();

Definition and use of Swift-class