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std::ctype_byname

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< cpp‎ | locale

 
 
Localizzazioni libreria
Impostazioni internazionali e sfaccettature
Original:
Locales and facets
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locale
Carattere classificazione
Original:
Character classification
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Conversioni
Original:
Conversions
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Facet categoria classi di base
Original:
Facet category base classes
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Facet categorie
Original:
Facet categories
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Locale specifici aspetti
Original:
Locale-specific facets
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Codice di conversione sfaccettature
Original:
Code conversion facets
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codecvt_utf8(C++11)
codecvt_utf16(C++11)
C locale
Original:
C locale
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Defined in header <locale>
template< class CharT >
class ctype_byname : public std::ctype<CharT>;
std::ctype_byname è un aspetto std::ctype che incapsula le regole di carattere di classificazione del locale specificato al sua costruzione.
Original:
std::ctype_byname is a std::ctype facet which encapsulates character classification rules of the locale specified at its construction.
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Due specializzazioni sono forniti dalla libreria standard
Original:
Two specializations are provided by the standard library
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Defined in header <locale>
std::ctype_byname<char>
fornisce la classificazione stretto carattere. Questa specializzazione utilizza tabella di ricerca per la classificazione dei caratteri
Original:
provides narrow character classification. This specialization uses table lookup for character classification
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std::ctype_byname<wchar_t>
fornisce la classificazione di un carattere
Original:
provides wide character classification
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Indice

[modifica] Membri tipi

Membro tipo
Original:
Member type
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Definition
mask ctype<charT>::mask

[modifica] Membri funzioni

costruisce un nuovo aspetto ctype_byname
Original:
constructs a new ctype_byname facet
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(membro pubblico funzione)
distrugge un aspetto ctype_byname
Original:
destructs a ctype_byname facet
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(protetto funzione membro)

Inherited from std::ctype<CharT>

Member types

Membro tipo
Original:
Member type
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Definition
char_type CharT

Member objects

Persona
Original:
Member name
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Type
id (statico) std::locale::id

Member functions

Invoca do_is
Original:
invokes do_is
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(membro pubblico of std::ctype funzione) [edit]
Invoca do_scan_is
Original:
invokes do_scan_is
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(membro pubblico of std::ctype funzione) [edit]
Invoca do_scan_not
Original:
invokes do_scan_not
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(membro pubblico of std::ctype funzione) [edit]
Invoca do_toupper
Original:
invokes do_toupper
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(membro pubblico of std::ctype funzione) [edit]
Invoca do_tolower
Original:
invokes do_tolower
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(membro pubblico of std::ctype funzione) [edit]
Invoca do_widen
Original:
invokes do_widen
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(membro pubblico of std::ctype funzione) [edit]
Invoca do_narrow
Original:
invokes do_narrow
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(membro pubblico of std::ctype funzione) [edit]

Protected member functions

[virtuale]
classifica un carattere o una sequenza di caratteri
Original:
classifies a character or a character sequence
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(virtuale protetto funzione of std::ctype membro) [edit]
[virtuale]
individua il primo carattere in una sequenza che è conforme alla classificazione fornita
Original:
locates the first character in a sequence that conforms to given classification
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(virtuale protetto funzione of std::ctype membro) [edit]
[virtuale]
individua il primo carattere in una sequenza che non riesce classificazione givne
Original:
locates the first character in a sequence that fails givne classification
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(virtuale protetto funzione of std::ctype membro) [edit]
[virtuale]
converte uno o più caratteri in maiuscolo
Original:
converts a character or characters to uppercase
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(virtuale protetto funzione of std::ctype membro) [edit]
[virtuale]
converte uno o più caratteri in minuscolo
Original:
converts a character or characters to lowercase
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(virtuale protetto funzione of std::ctype membro) [edit]
[virtuale]
converte uno o più caratteri da char a charT
Original:
converts a character or characters from char to charT
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(virtuale protetto funzione of std::ctype membro) [edit]
[virtuale]
converte uno o più caratteri da charT a char
Original:
converts a character or characters from charT to char
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(virtuale protetto funzione of std::ctype membro) [edit]

Inherited from std::ctype_base

Member types

Tipo
Original:
Type
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Definition
mask
maschera di bit di tipo non specificato (enumerazione, tipo intero, o bitset)
Original:
unspecified bitmask type (enumeration, integer type, or bitset)
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Member constants

space
[statico]
il valore di mask carattere classificazione Identificare gli spazi
Original:
the value of mask identifying whitespace character classification
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(pubblico membro statico costante)
print
[statico]
il valore di mask identificare classificazione stampabile carattere
Original:
the value of mask identifying printable character classification
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(pubblico membro statico costante)
cntrl
[statico]
il valore di classificazione di controllo mask identificazione carattere
Original:
the value of mask identifying control character classification
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(pubblico membro statico costante)
upper
[statico]
il valore di mask identificare classificazione carattere maiuscolo
Original:
the value of mask identifying uppercase character classification
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(pubblico membro statico costante)
lower
[statico]
il valore di mask identificare classificazione carattere minuscolo
Original:
the value of mask identifying lowercase character classification
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(pubblico membro statico costante)
alpha
[statico]
il valore di mask identificare classificazione carattere alfabetico
Original:
the value of mask identifying alphabetic character classification
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(pubblico membro statico costante)
digit
[statico]
il valore di mask identificare classificazione cifra
Original:
the value of mask identifying digit character classification
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(pubblico membro statico costante)
punct
[statico]
il valore di classificazione punteggiatura mask identificazione carattere
Original:
the value of mask identifying punctuation character classification
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(pubblico membro statico costante)
xdigit
[statico]
il valore di mask identificazione esadecimale classificazione cifra
Original:
the value of mask identifying hexadecimal digit character classification
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(pubblico membro statico costante)
blank
[statico] (C++11)
il valore di mask identificare classificazione bianco carattere
Original:
the value of mask identifying blank character classification
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(pubblico membro statico costante)
alnum
[statico]
alpha | digit
(pubblico membro statico costante)
graph
[statico]
alnum | punct
(pubblico membro statico costante)

[modifica] Esempio

#include <iostream>
#include <locale>
 
int main()
{
    wchar_t c = L'\u00de'; // capital letter thorn
 
    std::locale loc("C");
 
    std::cout << "isupper('Þ', C locale) returned "
               << std::boolalpha << std::isupper(c, loc) << '\n';
 
    loc = std::locale(loc, new std::ctype_byname<wchar_t>("en_US.utf8"));
 
    std::cout << "isupper('Þ', C locale with Unicode ctype) returned "
              << std::boolalpha << std::isupper(c, loc) << '\n';
}

Output:

isupper('Þ', C locale) returned false
isupper('Þ', C locale with Unicode ctype) returned true

[modifica] Vedi anche

definisce le tabelle di classificazione dei caratteri
Original:
defines character classification tables
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(classe template) [edit]
specializzazione di std::ctype per char tipo
Original:
specialization of std::ctype for type char
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(classe modello di specializzazione) [edit]