Regex that Evaluates Regexes
2559
Is there a regular expression to detect a valid regular expression?
51287
Conditionally replace regex matches in string
30260
Is there a RegExp.escape function in JavaScript?
145107
Complexity of Regex substitution
101140
How can I find all matches to a regular expression in Python?
18075
How to mathematically evaluate a string like "2-1" to produce "1"?
64366
Matching an optional substring in a regex
21579
Can I test if a regex is valid in C# without throwing exception
28150
Formal Languages - Regular Expression
20678
Escape string for use in Javascript regex
6448
Reference - What does this regex mean?
90532
Regex matches but shouldn't
46005
Java regexp for file filtering
69892
Count number of matches of a regex in Javascript
51317
Regular expression to match digits and basic math operators
126506
Get string inside parentheses, removing parentheses, with regex
35850
Using regular expressions to validate a numeric range