Non-Printable Characters| www.regular-expressions.info
In a regular expression, square brackets are used to indicate character classes, which matches any of the characters in the character set.| 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
Understanding how a regex engine works internally enables you to craft better regular expressions by learning how to think like a regex engine.| www.regular-expressions.info
In a regular expression, the vertical bar or pipe symbol tells the regex engine to match any of two or more options| www.regular-expressions.info
Named Capturing Groups and Backreferences| www.regular-expressions.info
In a regular expression, the dot matches any character except line breaks.| 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
This tutorial teaches you how to create your own regular expressions, starting with the most basic regex concepts and ending with the most advanced and specialized capabilities.| www.regular-expressions.info
Add whitespace, line breaks and comments to clarify cryptic regular expressions| 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
In a regular expression, shorthand character classes match a single character from a predefined set of characters.| www.regular-expressions.info
In a regular expression, POSIX bracket expressions can be used to match one of a certain kind of characters.| 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
In regular expressions, \b anchors the regex at a word boundary or the position between a word and a non-word character, or vice versa.| www.regular-expressions.info