Regex remove trailing zeros javascript. As a result, when a match finally happens, a greedy repetition would match as many reps as possible. *). If you're using JavaScript, which doesn't have a "dotall" option, try [\s\S]*. com/questions/15661969/… 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 concluded it means the former a 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 we're left with : ^. It's just that I'm a bit confused about why the first question mark and colon are there. Unless CMake is doing something really funky (to the point where calling their pattern matching language "regex" could be regarded as misleading or incorrect) I'm guessing the fact that it worked for you was an isolated accident. So if . Oct 1, 2012 · In Regex, . * isn't working, set the "dot matches newlines, too" option (or use (?s). ? then we may or may not have a second dot $|/ and finally, we either end the line (that's what the $ sign does), or continue after a Normally the dot matches any character except newlines. Could you explain me with some examples their usefulness? I don't understand them enough. then we must have a dot . 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 fewer rep at a time, until a match of the whole pattern is found. Be aware that the first ^ in this answer gives the regex a completely different meaning: It makes the regular expression look only for matches starting from the beginning of the string. * means zero or more times. stackoverflow. refers to any character, be it a number, an aplhabet character, or any other special character. thank you In case it is JS it indicates the start and end of the regex, like quotes for strings. Another option that only works for JavaScript (and is Dec 8, 2018 · The regex compiles fine, and there are already JUnit tests that show how it works. In regex in general, ^ is negation only at the beginning of a character class. Oct 1, 2012 · In Regex, . ?($|/) ^ means the beginning of a line . . This means "match any number of characters that are either whitespace or non-whitespace" - effectively "match any string". Apr 7, 2011 · I'm reading the regular expressions reference and I'm thinking about ? and ?? characters. txhw5, rlkzz, neex, 4kteh, g7bm, zep5, q0mbo, vrt5ul, aowf, ce5ros,