Is there a way to combine discontinuous capture groups in a single regex?

Question

I am using C++ RE2. I want to save concatenated discontinuous capture groups in result string. The Regex itself may have one or more capture groups.

RE2::PartialMatch(sourceStr, Regex, &result)

Example

sourceStr = "This is an example."
Regex = "(This).*(example)"
result = "Thisexample"

How can I accomplish this?

Answer 1

You could try:

string result = sourceStr;
RE2::Replace(&result, "(This).*(example)", "$1$2");

Answer 2

Why use an outside library when you have the library already existing in the studio itself. Use it with the "match function. A link to refer for further learning: https://en.cppreference.com/w/cpp/regex