C ++ 11 Regex查找捕获组标识符

I've looked at a number of sources for C++11's new regex library, but most of them focus more on the syntax, or the more basic usage of things like regex_match, or regex_search. While these articles helped me get started using the regex library, I'm having a difficult time finding more details on capture groups.I've looked at a number of sources for C++11's