Regex Cheatsheet - Regular Expression Quick Reference
Quick reference for regular expression patterns. Character classes, quantifiers, anchors, and common patterns.
Alternation |
GroupMatches left or right expression (logical OR)
Pattern
cat|dogSyntax
Explanation
| has lowest precedence. Use parentheses: (cat|dog)
Examples
cat|dogMatches "cat" or "dog"
Matches: cat, dog
red|green|blueMatches red, green, or blue
Matches: red, green, blue
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