std::regex_traits::lookup_collatename
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| template< class ForwardIt > string_type lookup_collatename( ForwardIt first, ForwardIt last ) const; |
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Se a seqüência de caracteres
[first, last) representa o nome de um elemento válido agrupamento na localidade atualmente imbuído, retorna o nome do elemento de combinação. Caso contrário, retorna uma cadeia vazia.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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Elementos de combinação são os símbolos encontrados em expressões regulares POSIX entre
[. e .]. Por exemplo, [.a.] corresponde ao a personagem na localidade C. [.tilde.] corresponde ao ~ personagem na localidade C também. [.ch.] corresponde ao ch dígrafo na localidade Checa, mas gera std::regex_error com código de erro std::regex_constants::error_collate na maioria dos outros locais.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.
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[editar] Parâmetros
| first, last | - | um par de iteradores que determina a seqüência de caracteres que representa um nome de elemento de combinação
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.
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[editar] Valor de retorno
A representação do elemento de combinação nomeado como uma cadeia de caracteres.
Original:
The representation of the named collating element as a character string.
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[editar] Exemplo
#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'; }
Saída:
regex_traits<>::lookup_collatename("tilde") returns "~"
true
