operator== <regex>
Equal comparison for various objects.
template<class BidIt>
bool operator==(const sub_match<BidIt>& left,
const sub_match<BidIt>& right);
template<class BidIt, class IOtraits, class Alloc>
bool operator==(
const basic_string<typename iterator_traits<BidIt>::value_type, IOtraits, Alloc>& left,
const sub_match<BidIt>& right);
template<class BidIt, class IOtraits, class Alloc>
bool operator==(const sub_match<BidIt>& left,
const basic_string<typename iterator_traits<BidIt>::value_type, IOtraits, Alloc>& right);
template<class BidIt>
bool operator==(const typename iterator_traits<BidIt>::value_type* left,
const sub_match<BidIt>& right);
template<class BidIt>
bool operator==(const sub_match<BidIt>& left,
const typename iterator_traits<BidIt>::value_type* right);
template<class BidIt>
bool operator==(const typename iterator_traits<BidIt>::value_type& left,
const sub_match<BidIt>& right);
template<class BidIt>
bool operator==(const sub_match<BidIt>& left,
const typename iterator_traits<BidIt>::value_type& right);
template<class BidIt, class Alloc>
bool operator==(const match_results<BidIt, Alloc>& left,
const match_results<BidIt, Alloc>& right);
매개 변수
BidIt
반복기의 형식입니다.IOtraits
The string traits class.Alloc
The allocator class.left
The left object to compare.right
The right object to compare.
설명
Each template operator converts each of its arguments to a string type and returns the result of comparing the converted objects for equality.
When a template operator converts its arguments to a string type it uses the first of the following transformations that applies:
arguments whose types are a specialization of template class match_results or sub_match are converted by calling the str member function;
arguments whose types are a specialization of the template class basic_string are unchanged;
all other argument types are converted by passing the argument value to the constructor for an appropriate specialization of the template class basic_string.
예제
// std_tr1__regex__operator_eq.cpp
// compile with: /EHsc
#include <regex>
#include <iostream>
typedef std::cmatch::string_type Mystr;
int main()
{
std::regex rx("c(a*)|(b)");
std::cmatch mr;
std::regex_search("xcaaay", mr, rx);
std::csub_match sub = mr[1];
std::cout << "match == " << mr.str() << std::endl;
std::cout << "sub == " << sub << std::endl;
std::cout << std::endl;
std::cout << "match == match == " << std::boolalpha
<< (mr == mr) << std::endl;
std::cout << "sub == sub == " << std::boolalpha
<< (sub == sub) << std::endl;
std::cout << "string(\"aab\") == sub == " << std::boolalpha
<< (Mystr("aab") == sub) << std::endl;
std::cout << "sub == string(\"aab\") == " << std::boolalpha
<< (sub == Mystr("aab")) << std::endl;
std::cout << "\"aab\" == sub == " << std::boolalpha
<< ("aab" == sub) << std::endl;
std::cout << "sub == \"aab\" == " << std::boolalpha
<< (sub == "aab") << std::endl;
std::cout << "'a' == sub == " << std::boolalpha
<< ('a' == sub) << std::endl;
std::cout << "sub == 'a' == " << std::boolalpha
<< (sub == 'a') << std::endl;
return (0);
}
요구 사항
헤더:<regex>
네임스페이스: std