Top "Lookaround" questions

Regular expression lookarounds are zero-width assertions that verify conditions about the context of a match at the current match position.

Regex lookahead, lookbehind and atomic groups

I found these things in my regex body but I haven't got a clue what I can use them for. …

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RegEx - Exclude Matched Patterns

I have the below patterns to be excluded. make it cheaper make it cheapere makeitcheaper.com.au makeitcheaper making it …

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How can we match a^n b^n with Java regex?

This is the second part of a series of educational regex articles. It shows how lookaheads and nested references can …

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