// These functions are not thread-safe, nor are the NSDateFormatter instances they return. // Make sure that this function and the formatter are called on only one thread at a time.

getISO8601Formatter

#pragma mark - DATE CONVERSION:


// These functions are not thread-safe, nor are the NSDateFormatter instances they return.
// Make sure that this function and the formatter are called on only one thread at a time.
static NSDateFormatter* getISO8601Formatter() {
    static NSDateFormatter* sFormatter;
    if (!sFormatter) {
        // Thanks to DenNukem's answer in http://stackoverflow.com/questions/399527/
        sFormatter = [[NSDateFormatter alloc] init];
        sFormatter.dateFormat = @"yyyy-MM-dd'T'HH:mm:ss.SSSXXX";
        sFormatter.calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
        sFormatter.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US"];
    }

    return sFormatter;
}