Explanation of the regular expression flavor used by the XQuery and XPath functions fn:matches, fn:replace and fn:tokenize.| www.regular-expressions.info
In a regular expression, the asterisk or star causes the preceding token to be matched zero or more times, and the plus one or more times.| www.regular-expressions.info
In a regular expression, the dot matches any character except line breaks.| www.regular-expressions.info
Add whitespace, line breaks and comments to clarify cryptic regular expressions| www.regular-expressions.info
Specifying Modes Inside The Regular Expression| www.regular-expressions.info
In a regular expression, parentheses can be used to group regex tokens together and for creating backreferences. Backreferences allow you to reuse part of the regex match in the regex, or in the replacement text.| www.regular-expressions.info
Explanation of the regular expression flavor used in the XML Schema standard| www.regular-expressions.info
In a regular expression, the caret matches the concept “start of string”, while the dollar sign matches “end of string”| www.regular-expressions.info