Shorthand arguments

To reach the maximum awesomeness of Swift, you can refer to the argument list with names $0, $1, and so on. When you decide to use the shorthand arguments, you can omit the list of parameters. You may ask what about the in keyword, will it be alone? The answer is no, we won't leave it alone; we can omit it as well completely. Here is the final version of our sort function:

names.sort({ $0 > $1})