Lea Verou • 5/13/2012

Hacking lookahead to mimic intersection, subtraction and negation

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This technical article demonstrates advanced regular expression techniques using lookahead to mimic set operations like intersection (AND), subtraction (NOT), and negation. It provides practical examples for password validation, number filtering, and pattern exclusion, addressing common regex challenges in software development.

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#regex #Lookahead #Regex Intersection
Hacking lookahead to mimic intersection, subtraction and negation

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