std::isblank<div class="t-tr-text">(Std :: locale)<div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig">(std::locale)</div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div>

<metanoindex/>

 

C++

Langage

Concepts

Bibliothèque d'utilitaires

Bibliothèque pour les chaînes de caractères

Bibliothèque de conteneurs

Bibliothèque d'algorithmes

Bibliothèque d'itérateurs

Bibliothèque pour le calcul numérique

Bibliothèque pour les entrées/sorties

Bibliothèque pour la régionalisation

Bibliothèque pour les expressions régulières (C++11)

Bibliothèque pour les opérations atomiques (C++11)

Bibliothèque pour les processus légers (threads) (C++11)

 

Bibliothèque localisations

Locales et facettes Original: Locales and facets The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
locale
use_facet	has_facet
Classification des caractères Original: Character classification The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
isspace isblank (C++11) iscntrl isupper islower isalpha	isdigit ispunct isxdigit isalnum isprint isgraph
Conversions Original: Conversions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
toupper tolower	wstring_convert (C++11) wbuffer_convert (C++11)
Classes de facettes catégorie de base Original: Facet category base classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ctype_base codecvt_base messages_base	time_base money_base
Catégories de facettes Original: Facet categories The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ctype ctype<char> codecvt collate messages time_get time_put	num_get num_put numpunct money_get money_put moneypunct
Spécifique aux paramètres régionaux facettes Original: Locale-specific facets The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ctype_byname ctype_byname<char> codecvt_byname messages_byname collate_byname	time_get_byname time_put_byname numpunct_byname moneypunct_byname
Facettes de conversion de code Original: Code conversion facets The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
codecvt_utf8 (C++11) codecvt_utf16 (C++11)	codecvt_utf8_utf16 (C++11) codecvt_mode (C++11)
C locale Original: C locale The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
setlocale localeconv lconv	LC_ALL LC_COLLATE LC_CTYPE LC_MONETARY LC_NUMERIC LC_TIME

 

<tbody> </tbody>

Déclaré dans l'en-tête <locale>
template< class charT > bool isblank( charT ch, const locale& loc );		(depuis C++11)

Vérifie si le caractère donné est considéré comme un caractère blanc par facette ctype l'endroit donné de .

Original:

Checks if the given character is classified as a blank character by the given locale's ctype facet.

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Paramètres

ch	-	caractère Original: character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
loc	-	locale Original: locale The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Retourne la valeur

Retours true si le personnage est considéré comme un caractère blanc, false autrement .

Original:

Returns true if the character is classified as a blank character, false otherwise.

The text has been machine-translated via Google Translate.
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Mise en œuvre possible

template< class charT > bool isblank( charT ch, const std::locale& loc ) { return std::use_facet<std::ctype<charT>>(loc).is(std::ctype_base::blank, ch); }

Exemple

Illustre l'utilisation de isblank () avec différents paramètres régionaux (spécifiques à l'OS) .

Original:

Demonstrates the use of isblank() with different locales (OS-specific).

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

#include <iostream>
#include <locale>
template< class charT >
void try_with(wchar_t c, const char* loc)
{
    std::wcout << "isblank('" << c << "', locale(\"" << loc << "\")) returned " << std::boolalpha
               << std::isblank(c, std::locale(loc)) << '\n';
}
int main()
{
    const wchar_t IDEO_SPACE = L'\u3000'; // Unicode character 'IDEOGRAPHIC SPACE'
    try_with(IDEO_SPACE, "C");
    try_with(IDEO_SPACE, "en_US.UTF-8");
}

Résultat :

isblank(' ', locale("C")) returned false
isblank(' ', locale("en_US.UTF-8")) returned true

Voir aussi

isblank (C++11)	vérifie si un caractère est un caractère vide Original: checks if a character is a blank character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction)
iswblank (C++11)	vérifie si un caractère large est un caractère vide Original: checks if a wide character is a blank character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction)