operator!= <regex>

Artigo
06/09/2015

Comparação diferente para vários objetos.

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);

Parâmetros

BidIt
O tipo de iterador.
IOtraits
A classe de características de cadeia de caracteres.
Alloc
A classe do alocador.
left
O objeto esquerdo da ser comparada.
right
O objeto direito da ser comparada.

Comentários

Cada operador de modelo retorna !(left == right).

Exemplo

// std_tr1__regex__operator_ne.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); 
    }