Searching with Regular Expressions (RegEx) | Regular expression contains string example
Aregularexpressionisaformofadvancedsearchingthatlooksforspecificpatterns,asopposedtocertaintermsandphrases.WithRegExyoucanusepatternmatchingtosearchforparticularstringsofcharactersratherthanconstructingmultiple,literalsearchqueries.RegExusesmetacharactersinconjunctionwithasearchenginetoretrievespecificpatterns.Metacharactersarethebuildingblocksofregularexpressions.Forexample,“d”inaregularexpressionisametacharacterthatrepresentsadigitcharacter.“d”standsfortheliteralcharacter,“d.”Youcanuseregu...
A regular expression is a form of advanced searching that looks for specific patterns, as opposed to certain terms and phrases. With RegEx you can use pattern matching to search for particular strings of characters rather than constructing multiple, literal search queries.
RegEx uses metacharacters in conjunction with a search engine to retrieve specific patterns. Metacharacters are the building blocks of regular expressions. For example, “d” in a regular expression is a metacharacter that represents a digit character. “d” stands for the literal character, “d.” You can use regular expressions to search for social security numbers, patent numbers, URLs, email addresses, Bates numbers, and other strings that follow a specific pattern.
There are several implement...