Regular expressions

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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 defineGive the precise meaning of a word, phrase, concept or physical quantity. a search pattern. Usually this pattern is then used by string searching algorithms for "find" or "find and replace" operations on strings.[2]

regex cheat sheet

Regex Cheat Sheet.png