【Swift】属性

var G_USERDEFAULTS = NSUserDefaults.standardUserDefaults()

var GLOBAL_ICON_URL : String{    get{        if(G_USERDEFAULTS.objectForKey("GLOBAL_ICON_URL") != nil){        return G_USERDEFAULTS.objectForKey("GLOBAL_ICON_URL") as! String    }else{            G_USERDEFAULTS.setObject("333", forKey: "GLOBAL_ICON_URL")            return 333        }    }    set{        if(G_USERDEFAULTS.objectForKey("GLOBAL_ICON_URL") != nil){            if(G_USERDEFAULTS.objectForKey("GLOBAL_ICON_URL") as! String != "\(newValue)"){                G_USERDEFAULTS.setObject("\(newValue)", forKey: "GLOBAL_ICON_URL")                GLOBAL_SHOW_ICON = "0"            }else{                GLOBAL_SHOW_ICON = "1"            }        }else{             GLOBAL_SHOW_ICON = "0"        }    }}