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std::regex_traits::length

Da cppreference.com.
< cpp‎ | regex‎ | regex traits

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C++
 
Espressioni regolari libreria
Classi
Original:
Classes
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basic_regex(C++11)
sub_match(C++11)
match_results(C++11)
Algoritmi
Original:
Algorithms
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regex_match(C++11)
regex_search(C++11)
regex_replace(C++11)
Iteratori
Original:
Iterators
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regex_iterator(C++11)
regex_token_iterator(C++11)
Eccezioni
Original:
Exceptions
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regex_error(C++11)
Tratti
Original:
Traits
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regex_traits(C++11)
Costanti
Original:
Constants
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syntax_option_type(C++11)
match_flag_type(C++11)
error_type(C++11)
 
std::regex_traits
 
static std::size_t length(const char_type* p);
Calcola la lunghezza di un null-terminated sequenza di caratteri, cioè, la più piccola in modo tale che i 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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specializzazioni libreria standard di std::regex_traits eseguire std::char_traits<CharT>::length(p);....
Original:
Standard library specializations of std::regex_traits execute std::char_traits<CharT>::length(p);
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[modifica] Parametri

p -
puntatore al primo elemento della terminazione null sequenza di caratteri
Original:
pointer to the first element of the null-terminated character sequence
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[modifica] Valore di ritorno

La lunghezza della stringa con terminazione null di caratteri.
Original:
The length of the null-terminated character string.
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[modifica] Esempio

#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
Estratto da "https://it.cppreference.com/mwiki/index.php?title=cpp/regex/regex_traits/length&oldid=26669"