Swift：使用strftime和localtime进行NSDate格式化

    let maxSize: UInt = 11    var buffer: CChar[] = CChar[](count: Int(maxSize), repeatedValue: 0)    var time: time_t = Int(NSDate().timeIntervalSince1970)    var length = strftime(&buffer, maxSize, "%-l:%Mu2008%p", localtime(&time))    var dateString = NSString(bytes: buffer, length: Int(length), encoding: NSUTF8StringEncoding)    NSLog("dateString: %@", dateString) // dateString: 11:56 PM