LYCOS RETRIEVER 
Regular Expression: Patterns
built 635 days ago
-->Parentheses around any part of the regular expression pattern cause that part of the matched substring to be remembered. Once remembered, the substring can be recalled for other use, as described in Using Parenthesized Substring Matches.
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RegexBuddy's regex building blocks make it much easier to define regular expressions. Instead of typing in regex tokens directly, just pick what you want from a descriptive menu. Use RegexBuddy's neatly organized tree of regex tokens to keep track of the pattern you have built so far. Collapse grouping tokens (with green icons) to get a clear overview of complex regular expressions.
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This is a "postponed" regular subexpression. The code is evaluated at run time, at the moment this subexpression may match. The result of evaluation is considered as a regular expression and matched as if it were inserted instead of this construct. Note that this means that the contents of capture buffers defined inside an eval'ed pattern are not available outside of the pattern, and vice versa, there is no way for the inner pattern to refer to a capture buffer defined outside. Thus,
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Groovy supports regular expressions natively using the ~"pattern" expression, which compiles a Java Pattern object from the given pattern string. Groovy ... supports the =~ (create Matcher) and ==~ (matches regex) operators.
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"This is a handy little guide for common regular expression fundamentals and odds and ends. The intro chapter does a nice job of giving you the regex elevator speech and hits all the important fundamentals: different engines, metacharacters, and general pattern rules...Each chapter is concise, well-written, and hits the major things you'll need to refresh your memory on from time to time. Overall it's a very well-done book."
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With RegexBuddy you can quickly and easily create and edit regular expressions. Mix manipulating RegexBuddy's building blocks and directly editing the regex pattern to suit your own skill and style. Rely on RegexBuddy as you rely on a buddy or coach to assist you.
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