Swift实现OC中的单例模式

一、MySingle类

import Foundation

class MySingle{
    //定义单例的属性
    var name:String?
    var age:Int?

var height:Double? //定义类方法 class func shareInstance()->MySingle{ struct qzSingle{ static var predicate:dispatch_once_t = 0 static var instance:MySingle? = nil } dispatch_once(&qzSingle.predicate,{ qzSingle.instance = MySingle() }) return qzSingle.instance! } }

二、AppDelegate中调用

//单例的使用
        var single = MySingle.shareInstance()
        single.name = "秦志伟"
        single.age = 24
        single.height = 176.00
        
        println(single)

执行结果：has 3 children