std::tolower<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>

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Lokalisierungen Bibliothek

Locales und Facetten 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
Buchstaben-Klassifikation 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)
Facet Kategorie Basisklassen 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
Facet Kategorien 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
Locale-spezifische Facetten 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
Code-Konvertierung Facetten 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>

definiert in Header <locale>
template< class charT > charT tolower( charT ch, const locale& loc );

Wandelt das Zeichen ch in Kleinbuchstaben, wenn möglich, mit den Umsetzungsregeln durch den angegebenen Gebietsschemas std::ctype Facette angegeben .

Original:

Converts the character ch to lowercase if possible, using the conversion rules specified by the given locale's std::ctype facet.

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Parameter

ch	-	Charakter 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.

Rückgabewert

Gibt die Kleinbuchstaben Form ch wenn man in der locale aufgeführt ist, sonst zurück ch unverändert .

Original:

Returns the lowercase form of ch if one is listed in the locale, otherwise return ch unchanged.

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Notes

Nur 1:1 Zeichenzuordnung kann durch diese Funktion durchgeführt werden, zB der griechische Großbuchstabe 'Σ' hat zwei Kleinbuchstaben Formen, abhängig von der Position in einem Wort: "σ" und "ς". Ein Aufruf std::tolower kann nicht verwendet werden, um die korrekte Kleinbuchstaben Form in diesem Fall zu erhalten .

Original:

Only 1:1 character mapping can be performed by this function, e.g. the Greek uppercase letter 'Σ' has two lowercase forms, depending on the position in a word: 'σ' and 'ς'. A call to std::tolower cannot be used to obtain the correct lowercase form in this case.

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Mögliche Implementierung

template< class charT > charT tolower( charT ch, const std::locale& loc ) { return std::use_facet<std::ctype<charT>>(loc).tolower(ch); }

Siehe auch

toupper(std::locale)	wandelt ein Zeichen in Großbuchstaben mit dem ctype Facette eines locale Original: converts a character to uppercase using the ctype facet of a locale The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktions-Template)
tolower	wandelt ein Zeichen in Kleinbuchstaben Original: converts a character to lowercase The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion)
towlower	wandelt eine weite Zeichen in Kleinbuchstaben Original: converts a wide character to lowercase The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion)