Regular expressions
Computational thinking, problem-solving and programming[1]
A regular expression, regex (sometimes called a rational expression) is, in theoretical computer science and formal language theory, a sequence of characters that define a search pattern. Usually this pattern is then used by string searching algorithms for "find" or "find and replace" operations on strings.[2]
You should consult this site as a reference as you are learning about regular expressions.
regex cheat sheet[edit]
