Learning to Program

Lists of Characters

The simplest way to use brackets is to list all the acceptable characters within the brackets. In the updated namePattern, the acceptable characters are S and s, so those two characters go inside the brackets. If you wanted to match double or single quotes, you could use ["']. If you wanted to match any lowercase letter in the English alphabet, you could use [abcdefghijklmnopqrstuvwxyz], and if you wanted to match any lowercase or uppercase letter in the English alphabet, you could use [abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ]. Wow, that is ugly. There must be a better way.