Ios/swift/クラス

クラスのプロパティとメソッド

-User.swift

class User {
   var name: String
   let age: Int
   init(name: String, age: Int) {
       self.name = name
       self.age = age
   }
   func getName() -> String {
       return self.name;
   }
   func setName(name:String) {
       self.name = name;
   }
}

-ViewController.swift

var user = User(name: "taro", age: 10)
user.getName() // taro
user.setName("suzuki");
user.getName() // suzuki

Staticを使う

class Utility {
   static func bai(a:Int) -> Int {
       return a * 2;
   }
}
Utility.bai(10); // 20

継承

class Animal {
   var name: String
   var foot: Int
   init(name: String, foot: Int) {
       self.name = name
       self.foot = foot
   }
   func getName() -> String {
       return self.name;
   }
   func getFoot() -> Int {
       return self.foot;
   }
}
class Cat: Animal
{
   init() {
       super.init(name: "cat", foot: 4)
   }
}
var cat = Cat()
cat.getName() // cat
cat.getFoot() // 4

クラスから生成したインスタンスを配列に入れる

   class User {
       var name:String = ""
       var age:Int = 0
       init(name: String, age: Int) {
           self.name = name
           self.age = age
       }
   }
   var users:Array<User> = []
   let user = User(name: "taro", age: 10) as User
   let user2 = User(name: "jiro", age: 20) as User
   users.append(user)
   users.append(user2)
   print("name=" + users[0].name)
   for user in users {
       print("name=" + user.name);
       print("age=" + String(user.age));
   }

NSObjectを継承すべきか

遅くなるようなので、なくてよい

参考：http://mpon.hatenablog.com/entry/2015/08/13/174157