IOS开发-Swift-函数学习

//
//  main.swift
//  FunctionDemo
//
//  Created by xs -Achilles on 15/3/18.
//  Copyright (c) 2015年 xs -Achilles. All rights reserved.
//

import Foundation


func showInfo(name:String,age:Int)->String{
    return "name:\(name) age:\(age)"
}

func greeting()->Void{
    println("Good Evening!")
}

func turpleInfo()->(name:String,age:Int){
    return ("xs_Achilles",23)
}

//外部参数
func enternParam(userName name:String){
    println(name)
}

func enterParam1(#name:String){
    println(name)
}

//多个参数 
func mutiParam(users:String...){
    for user in users{
        println(user)
    }
}
//默认参数
func defaultParam(age:Int = 20){
    println(age)
}

//inout参数 
func inoutParam(inout name:String){
    name = "xdfg"
}

//函数类型 
func addMoney(a:Int,b:Int)->Int{
    return a + b
}

//函数作为参数
func onMoneyAdded((Int,Int)->Int){
    println("func call")
}

onMoneyAdded(addMoney)

//函数作为返回值
func onDeleteMoney()->(Int,Int)->Int{
    return addMoney
}

let hhe = onDeleteMoney()
println(hhe(11,2))

//函数嵌套
func a(){
    func b(){
        println("I am func b")
    }
    println("I am func a")
}


println(showInfo("xx",30))
greeting()
println(turpleInfo().name)
enternParam(userName: "hehe")
enterParam1(name: "haha")
mutiParam("xiaoqiang","xiaoming","xiaohong")
defaultParam()
defaultParam(age: 25)

var name = "zl"
inoutParam(&name)
println(name)

var getMoney:(Int,Int)->Int = addMoney

println(getMoney(2,1))