std::regex_traits::lookup_collatename
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<tbody> </tbody> template< class ForwardIt > string_type lookup_collatename( ForwardIt first, ForwardIt last ) const; |
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Si la séquence de caractères
[first, last) représente le nom d'un élément valable de classement dans la locale courante imprégnés, retourne le nom de cet élément d'assemblage. Sinon, retourne une chaîne vide .Original:
If the character sequence
[first, last) represents the name of a valid collating element in the currently imbued locale, returns the name of that collating element. Otherwise, returns an empty string.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Assemblage des éléments sont les symboles qui se trouvent dans les expressions régulières POSIX entre
[. et .]. Par exemple, [.a.] correspond à la a personnage dans l'environnement local C. [.tilde.] correspond à la ~ personnage dans l'environnement local C ainsi. [.ch.] correspond à la ch digraphe locale tchèque, mais génère std::regex_error avec le code d'erreur std::regex_constants::error_collate dans la plupart des autres endroits .Original:
Collating elements are the symbols found in POSIX regular expressions between
[. and .]. For example, [.a.] matches the character a in the C locale. [.tilde.] matches the character ~ in the C locale as well. [.ch.] matches the digraph ch in Czech locale, but generates std::regex_error with error code std::regex_constants::error_collate in most other locales.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Paramètres
| first, last | - | une paire d'itérateurs qui détermine la séquence de caractères qui représente le nom d'un élément d'assemblage
Original: a pair of iterators which determines the sequence of characters that represents a collating element name The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| Type requirements | ||
-ForwardIt must meet the requirements of ForwardIterator.
|
Retourne la valeur
La représentation de l'élément d'assemblage nommé comme une chaîne de caractères .
Original:
The representation of the named collating element as a character string.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Exemple
#include <iostream>
#include <string>
#include <regex>
struct noisy_traits : std::regex_traits<char> {
template< class Iter >
string_type lookup_collatename( Iter first, Iter last ) const {
string_type result = regex_traits::lookup_collatename(first, last);
std::cout << "regex_traits<>::lookup_collatename(\""
<< string_type(first, last)
<< "\") returns \"" << result << "\"\n";
return result;
}
};
int main()
{
std::string str = "z|}a"; // C locale collation order: x,y,z,{,|,},~
std::basic_regex<char, noisy_traits> re("[x-[.tilde.]]*a", std::regex::basic);
std::cout << std::boolalpha << std::regex_match(str, re) << '\n';
}
Résultat :
regex_traits<>::lookup_collatename("tilde") returns "~"
true