NSDate+RFC3339

NSDate+RFC3339.swift

// known-good: Xcode 7.3 (Swift 2.2)

import Cocoa

private var rfc3339formatter:NSDateFormatter = {
  let formatter = NSDateFormatter()
  formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z"
  formatter.timeZone = NSTimeZone(forSecondsFromGMT: 0)
  formatter.calendar = NSCalendar(calendarIdentifier: NSCalendarIdentifierISO8601)!
  formatter.locale = NSLocale(localeIdentifier: "en_US_POSIX")
  return formatter
}()


extension NSDate {
  var stringFormattedAsRFC3339: String {
    return rfc3339formatter.stringFromDate(self)
  }
  
  convenience init?(RFC3339FormattedString:String) {
    if let d = rfc3339formatter.dateFromString(RFC3339FormattedString) {
      self.init(timeInterval:0,sinceDate:d)
    }
    else { return nil }
  }
}