【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"
}

}
}