NAME¶

std::sub_match::operatorstring_type,std::sub_match::str - std::sub_match::operatorstring_type,std::sub_match::str

Synopsis¶

operator string_type() const; (1)
string_type str() const; (2)

Converts to an object of the underlying std::basic_string type.

The first version is an implicit conversion, the second one is explicit.

Parameters¶

(none)

Return value¶

Returns the matched character sequence as an object of the underlying
std::basic_string type. If the matched member is false, then the empty string is
returned.

Complexity¶

Linear in the length of the underlying character sequence.

Example¶

// Run this code

#include <cassert>
#include <iostream>
#include <regex>
#include <string>

int main()
{
const std::string html{R"("<a href="https://cppreference.com/">)"};
const std::regex re{"(http|https|ftp)://([a-z]+)\\.([a-z]{3})"};
std::smatch parts;
std::regex_search(html, parts, re);
for (std::ssub_match const& sub : parts)
{
const std::string s = sub; // (1) implicit conversion
assert(s == sub.str()); // (2)
std::cout << s << '\n';
}
}

Output:¶

https://cppreference.com
https
cppreference
com