swfit #7 Tuple

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

import UIKit

let page = (1,"第一页内容")

page.0
page.1

let (pageIndex,pageContent) = page
pageIndex
pageContent


//定义 tuple 的下标  类似 dict
let  antherPage:(pageIndex:Int, pageText:String) = (10 ,"cccccc text")

//用 下标来访问
antherPage.pageIndex
antherPage.pageText

//Tuple 作为函数返回值

func  currentPage() -> (pageInedex:Int , pageText:String) {
    return (1,"内容内容")
}

currentPage().pageText

let  books = [("python 入门",15,509,"计算机"), ("算法导论",4,300,"理论"),
        ("互联网思维",6,400 ,"商业")]

// switch tupe _ 表示 忽略
for book in books {
    println("\(book.0) -")
    switch book {
        //定义变量
    case (_,15,let chapterCount,let genre):
        println("这本书是给 python初学者用")
        //区间条件
    case (_,5...7,_,_):
        println("创业书籍")
    default:
        println("其他书籍")
    }
}

// 利用 Tuple 交换 2个变量值
var name1 = "kai"
var name2 = "super man"

(name1,name2)=(name2,name1)

name1