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@jemoka / Jemoka Knowledge Base / raw/concept/kbhregular_expression_string_processing.md
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--- title: "regular expression (string processing)" source: https://www.jemoka.com/posts/kbhregular_expression_string_processing/ --- did you know you can do matching inline too matching equivalent statements: test (\w+) \1; non-capture group (?:test) lookaheads (?=pattern) true if pattern matches, but doesn’t touch the character pointer (?!pattern) true if pattern doesn’t match; also doesn’t advance pointer (?:pattern) will advance character pointer but will not create a capture group ^beginning of line end of line$