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Regular expression

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A regular expression (shortened as regex or regexp; also referred to as rational expression) is a sequence of characters that specifies a search pattern. Usually such patterns are used by string-searching algorithms for "find" or "find and replace" operations on strings, or for input validation. It is a technique developed in theoretical computer science and formal language theory.

Regular expression - Wikipedia Jump to content From Wikipedia, the free encyclopedia Sequence of characters that forms a search pattern "Regex" redirects here. For the comic book, see Re:Gex . ".*" redirects here. For the C++ operator, see Pointer (computer science) § Pointer-to-member . /r[aeiou]+/g</syntaxhighlight> (lowercase ''r'' followed by one or more lowercase vowels)."},"text":{"wt":"Blue"}},"i":0}}]}'> Blue highlights show the match results of the regular expression pattern: /r[aeiou]+/ g (lowercase r followed by one or more lowercase vowels). A regular expression (shortened as regex

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