Simple regex for C++

Question

I'm new to regexes and I'm trying to find a regex that matches :randomNumberOfWhitespacesOrNothing:

I've tried something like this :([\s\S]*): but it didn't work. Can anyone help me?

Answer 1

The \S pattern matches any non-whitespace symbol. Remove it from your character class and use

:(\s*):

See the regex demo

Details:

• : - a colon
• (\s*) - capturing group with ID 1 that matches 0+ (due to * quantifier) whitespace symbols
• : - a colon.