Dec 8, 2018 · The regex compiles fine, and there are already JUnit tests that show how it works. It's just that I'm a bit confused about why the first question mark and colon are there.

In case it is JS it indicates the start and end of the regex, like quotes for strings. stackoverflow.com/questions/15661969/…

Oct 3, 2010 · Now, when the regex engine tries to match against aaaaaaaab, the .* will again consume the entire string. However, since the engine will have reached the end of the string …

By putting ^ at the beginning of your regex and $ at the end, you ensure that no other characters are allowed before or after your regex. For example, the regex [0-9] matches the strings "9" as …

I now try to match the string given by the user with the following, automatically created, regex expression: ^(part1|part2)$ This only returns answer 1 and 2 as correct while answer 3 would …

Oct 5, 2008 · The RegEx of accepted answer returns the values including their sourrounding quotation marks: "Foo Bar" and "Another Value" as matches. Here are RegEx which return …

Nov 13, 2021 · How do I create a regular expression to match a word at the beginning of a string? We are looking to match stop at the beginning of a string and anything can follow it. For …

Jun 3, 2010 · How can I create a regex NOT to match something? For example I want to regex to match everything that is NOT the string "www.petroules.com". I tried [^www\.petroules\.com] …

Feb 15, 2013 · I am new to regular expressions and have been given the following regular expression: (\\p{L}|\\p{N}|_|-|\\.)* I know what * means and | means "or" and that ...

I need to extract from a string a set of characters which are included between two delimiters, without returning the delimiters themselves. A simple example should be helpful: Target: …