Namespace
Varianti

std::regex_traits

Da cppreference.com.
< cpp‎ | regex

 
 
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)
 
 
Defined in header <regex>
template< class CharT >
class regex_traits;
(dal C++11)
Il modello tratto tipo regex_traits forniture std::basic_regex con l'insieme dei tipi e le funzioni necessarie per operare sul CharT tipo.
Original:
The type trait template regex_traits supplies std::basic_regex with the set of types and functions necessary to operate on the type CharT.
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Dal momento che molti di operazioni regex sono dipendenti dalle impostazioni internazionali (quando il flag std::regex_constants::collate è impostato), la classe regex_traits contiene in genere un'istanza di un std::locale come membro privato.
Original:
Since many of regex operations are locale-sensitive (when std::regex_constants::collate flag is set), the regex_traits class typically holds an instance of a std::locale as a private member.
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[modifica] Specializzazioni standard

Due specializzazioni di std::regex_traits sono definiti dalla libreria standard:
Original:
Two specializations of std::regex_traits are defined by the standard library:
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std::regex_traits<char>
std::regex_traits<wchar_t>
Queste specializzazioni consentono di utilizzare std::basic_regex<char> (aka std::regex) e std::basic_regex<wchar_t> (aka std::wregex), ma al fine di utilizzare, per esempio, std::basic_regex<char32_t>, fornita dall'utente std::regex_traits<char32_t> specializtion deve essere definita.
Original:
These specializations make it possible to use std::basic_regex<char> (aka std::regex) and std::basic_regex<wchar_t> (aka std::wregex), but in order to use, for example, std::basic_regex<char32_t>, user-provided specializtion std::regex_traits<char32_t> needs to be defined.
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[modifica] Membri tipi

Tipo
Original:
Type
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Definition
char_type CharT
string_type std::basic_string<CharT>
locale_type
Il locale usato per il comportamento localizzato nelle espressioni regolari. Deve essere CopyConstructible
Original:
The locale used for localized behavior in the regular expression. Must be CopyConstructible
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char_class_type
Rappresenta una classificazione dei caratteri ed è in grado di contenere un insieme specifico di attuazione restituito da lookup_classname. Deve essere un BitmaskType .
Original:
Represents a character classification and is capable of holding an implementation specific set returned by lookup_classname. Must be a BitmaskType.
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[modifica] Membri funzioni

costruisce l'oggetto regex_traits
Original:
constructs the regex_traits object
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(membro pubblico funzione)
[statico]
calcola la lunghezza di una stringa con terminazione null di caratteri
Original:
calculates the length of a null-terminated character string
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(public static membro funzione)
determina la chiave di equivalenza per un carattere
Original:
determines the equivalence key for a character
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(membro pubblico funzione)
determina il case-insensitive chiave di equivalenza per un personaggio
Original:
determines the case-insensitive equivalence key for a character
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(membro pubblico funzione)
determina la chiave di ordinamento per la stringa data, utilizzato per fornire l'ordine di collazione
Original:
determines the sort key for the given string, used to provide collation order
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(membro pubblico funzione)
determina la chiave primaria di ordinamento della sequenza di caratteri, utilizzato per determinare classe di equivalenza
Original:
determines the primary sort key for the character sequence, used to determine equivalence class
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(membro pubblico funzione)
ottiene un elemento di confronto in base al nome
Original:
gets a collation element by name
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(membro pubblico funzione)
ottiene una classe di caratteri per nome
Original:
gets a character class by name
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(membro pubblico funzione)
indica l'appartenenza a una classe di caratteri localizzato
Original:
indicates membership in a localized character class
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(membro pubblico funzione)
traduce il carattere che rappresenta una cifra numerica in un valore intero
Original:
translates the character representing a numeric digit into an integral value
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(membro pubblico funzione)
imposta il locale
Original:
sets the locale
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(membro pubblico funzione)
ottiene il locale
Original:
gets the locale
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(membro pubblico funzione)