ohtwo

extension NSDate {
    var stringFormattedAsRFC3339: String {
        return rfc3339formatter.stringFromDate(self)
    }
    
    class func dateFromRFC3339FormattedString(rfc3339FormattedString:String) -> NSDate?
    {
        /*
        NOTE: will replace this with a failible initializer when Apple fixes the bug
        that requires the initializer to initialize all stored properties before returning nil,

ohtwo

import Foundation

var token: dispatch_once_t = 0
func test() {
    dispatch_once(&token) {
        println("This is printed only on the first call to test()")
    }
    println("This is printed for each call to test()")
}

ohtwo

//
//  AppDelegate.swift
//  pushtest
//
//  Created by sawapi on 2014/06/08.
//  Copyright (c) 2014年 sawapi. All rights reserved.
//
// iOS8用

import UIKit