Regex Cheatsheet - Regular Expression Quick Reference
Quick reference for regular expression patterns. Character classes, quantifiers, anchors, and common patterns.
Word Character Shorthand \w
Character ClassMatches any word character: [a-zA-Z0-9_]
Pattern
\wSyntax
Explanation
\w matches letters, digits, and underscores, commonly used for identifiers.
Examples
\w+Matches word sequence
Matches: hello_world123
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