Oct 1, 2012 · In Regex, . refers to any character, be it a number, an aplhabet character, or any other special ...

Jun 1, 2017 · Specifically when does ^ mean "match start" and when does it mean "not the following" in regular expressions? From the Wikipedia article and other references, I've …

Oct 15, 2009 · What is the literal meaning of this regex that contains a lookahead? 52. Reference - What does this regex ...

This feature is much more useful when you have a more complicated regex. Here, the parser doesn't have to capture anything at all to get a match: the asterisk allows any number of …

I need a regex that will accept only digits from 0-9 and nothing else. No letters, no characters. I thought this would work: ^[0-9] or even \d+ but these are accepting the characters : ^,$,(,), etc. …

Dec 17, 2012 · So, the String before the $ would of course not include the newline, and that is why ([A-Za-z ]+\n)$ regex of yours failed, and ([A-Za-z ]+)$\n succeeded. In simple words, …

Oct 24, 2011 · Now, by default, the RegEx e will find the third letter e in word There. There ^ However if you don't want the e which is immediately followed by r, then you can use RegEx …

On greedy vs non-greedy. Repetition in regex by default is greedy: they try to match as many reps as possible, and when this doesn't work and they have to backtrack, they try to match one …

Jan 2, 1999 · Parentheses in regular expressions define groups, which is why you need to escape the parentheses to match the literal characters. So to modify the groups just remove all of the …

Sep 13, 2015 · Let's deconstruct your regex (I removed the backslashes that are used to escape characters for the sake of simplification, we will use the dots and slashes as literal here) so …