Swift_Chain

chain.swift

import UIKit

class Person:NSObject
{
    var name:String!
    
    init(name:String){
        self.name = name
        println("init \(name)")
    }
    
    func shopping(shop:String)->Action
    {
        println("\(name) go \(shop)")
        
        let action = Action(master:self)
        action.master = self
        
        return action
    }
}

class Action:NSObject
{
    var master:Person!
    
    init(master:Person) {
        self.master = master
    }
    
    func action(action:String)
    {
        println(master.name + " " + action)
    }
}
println("1. -----")
Person(name:"zhangxi")
println("2. -----")
Person(name:"zhangxi").shopping("market")
println("3. -----")
Person(name:"zhangxi").shopping("market").action("buy something")

/*
1. -----
init zhangxi
2. -----
init zhangxi
zhangxi go market
3. -----
init zhangxi
zhangxi go market
zhangxi buy something
*/