- regex[meta header]
- std[meta namespace]
- sub_match[meta class]
- function[meta id-type]
- cpp11[meta cpp]
string_type str() const;
マッチした文字列を string_type
型で返す。キャストと同じ。
matched ? string_type(first, second) : string_type()
#include <iostream>
#include <regex>
int main()
{
const char s[] = "123";
const std::regex re(R"(\d+)");
std::cmatch m;
if (std::regex_search(s, m, re)) {
std::csub_match sub = m[0];
if (sub.matched) {
std::cout << '\'' << sub.str() << '\'' << std::endl;
sub.matched = false;
std::cout << '\'' << sub.str() << '\'' << std::endl;
} else {
std::cout << "not participate" << std::endl;
}
} else {
std::cout << "not match" << std::endl;
}
}
- str()[color ff0000]
- std::regex[link ../basic_regex.md]
- std::cmatch[link ../match_results.md]
- std::regex_search[link ../regex_search.md]
- std::csub_match[link ../sub_match.md]
'123'
''
- C++11
- Clang: -
- Clang, C++11 mode: 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6
- GCC: -
- GCC, C++11 mode: 4.9.0, 4.9.1, 5.0.0
- ICC: ??
- Visual C++: ??