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

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.

Oct 15, 2009 · May I know what ?= means in a regular expression? For example, what is its significance in this expression: (?=.*\\d).

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 …

Dec 17, 2012 · Afaik, it depends on the regex flavor and the matching options whether a newline is considered as end-of-string.

Javascript RegExp () allows you to specify a multi-line mode (m) which changes the behavior of ^ and $. ^ represents the start of the current line in multi-line mode, otherwise the start of the …

Aug 17, 2022 · What does \d+ mean in a regular expression?\d is a digit (a character in the range [0-9]), and + means one or more times. Thus, \d+ means match one or more digits. For …

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 …

Sep 13, 2015 · To answer your question: yes, the $ in this regular expression means the end of string. The following part: ($|\/) means end of string or '/'. In terms of string matching, this …

Oct 24, 2011 · @VaradBhatnagar You would need to escape the ? character in your regular expression. As an example in Clojure, if you wanted to match the string foo?, you could use …