Search
std::regex_search checks if text contains a text pattern. You can use the function with and without a std::match_results object and apply it to a C string, a C++ string or a range.
The example below shows how to use std::regex_search with texts of type const char*, std::string, const wchar_t* and std::wstring.
std::search// search.cpp
...
#include <regex>...
// regular expression holder for time
std::regex crgx("([01]?[0-9]|2[0-3]):[0-5][0-9]");
// const char*
std::cmatch cmatch;
const char* ctime{"Now it is 23:10."};
if (std::regex_search(ctime, cmatch, crgx)){
std::cout << ctime << std::endl; // Now it is 23:10.
std::cout << "Time: " << cmatch[0] << std::endl; // Time: 23:10
}
// std::string
std::smatch smatch;
std::string stime{"Now it is 23:25."};
if (std::regex_search(stime, smatch, crgx)){
std::cout << stime << std::endl; ...