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std::regex_traits::length

Da cppreference.com
< cpp‎ | regex‎ | regex traits

 
 
Biblioteca de expressões regulares
Classes
Original:
Classes
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basic_regex(C++11)
sub_match(C++11)
match_results(C++11)
Algoritmos
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Algorithms
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regex_match(C++11)
regex_search(C++11)
regex_replace(C++11)
Iteradores
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Iterators
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regex_iterator(C++11)
regex_token_iterator(C++11)
Exceções
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Exceptions
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regex_error(C++11)
Características
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Traits
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regex_traits(C++11)
Constantes
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Constants
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syntax_option_type(C++11)
match_flag_type(C++11)
error_type(C++11)
 
 
static std::size_t length(const char_type* p);
Calcula o comprimento de uma seqüência de caracteres terminada por nulo, ou seja, a menor i tal que p[i]==0.
Original:
Calculates the length of a null-terminated character sequence, that is, the smallest i such that p[i]==0.
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especializações biblioteca padrão de std::regex_traits executar std::char_traits<CharT>::length(p);....
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Standard library specializations of std::regex_traits execute std::char_traits<CharT>::length(p);
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[editar] Parâmetros

p -
ponteiro. ao primeiro elemento da seqüência de caracteres terminada com null
Original:
pointer to the first element of the null-terminated character sequence
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[editar] Valor de retorno

O comprimento da cadeia de caracteres terminada em nulo.
Original:
The length of the null-terminated character string.
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[editar] Exemplo

#include <regex>
#include <iostream>
 
int main()
{
    std::cout << std::regex_traits<char>::length(u8"Кошка") << '\n'
              << std::regex_traits<wchar_t>::length(L"Кошка") << '\n';
}

Output:

10
5