+Regular expressions (regex) are a specialized sequence of characters that define a [Search Pattern](/wiki/search_pattern). They are a compact language for [Text Processing](/wiki/text_processing), allowing powerful matching, finding, and manipulation of strings. Indispensable in [Programming](/wiki/programming) and data validation.
+## See also
+- [Pattern Matching](/wiki/pattern_matching)
+- [String](/wiki/string)
+- [Parsing](/wiki/parsing)
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