A variation of the expression by @Gumbo that makes use of \K for resetting match positions to prevent the inclusion of number blocks in the match. Usable in PCRE regex flavours.

This MATLAB function returns indices of the matching features in the two input feature sets.

Jun 13, 2021 · 28 PEP 622 provides an in-depth explanation for how the new match-case statements work, what the rationale is behind them, and provides examples where they're …

to capture a match between start and the first occurrence of end. Notice how the subexpression with nested parentheses spells out a number of alternatives which between them allow e only …

How do I match all lines not matching a particular pattern using grep? I tried this: grep '[^foo]'

Apr 13, 2013 · For example, ab|de would match either side of the expression. However, for something like your case you might want to use the ? quantifier, which will match the previous …

Is there a way in Python to access match groups without explicitly creating a match object (or another way to beautify the example below)? Here is an example to clarify my motivation for …

Suppose I have a string like test-123. I want to test whether it matches a pattern like test-<number>, where <number> means one or more digit symbols. I tried this code: …

Apr 13, 2010 · Yes. I am trying to first understand how to get the first occurrence and then next would like to find each match and replace.

I have a regex that I thought was working correctly until now. I need to match on an optional character. It may be there or it may not. Here are two strings. The top string is matched while …