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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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< cpp‎ | locale

 
 
Biblioteca localizações
Localidades e facetas
Original:
Locales and facets
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locale
Classificação de caracteres
Original:
Character classification
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Conversões
Original:
Conversions
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toupper
tolower
Facet classes base da categoria
Original:
Facet category base classes
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Categorias faceta
Original:
Facet categories
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Específicos da localidade facetas
Original:
Locale-specific facets
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Facetas de conversão de código
Original:
Code conversion facets
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codecvt_utf8(C++11)
codecvt_utf16(C++11)
C localidade
Original:
C locale
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Defined in header <locale>
template< class charT >
charT tolower( charT ch, const locale& loc );
Converte o ch personagem para minúsculas se possível, usando as regras de conversão especificados pela faceta determinada localidade de std::ctype.
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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Índice

[editar] Parâmetros

ch -
personagem
Original:
character
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loc -
localidade
Original:
locale
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[editar] Valor de retorno

Retorna a forma de minúsculas ch se está listado no local, caso contrário retorna ch inalterada.
Original:
Returns the lowercase form of ch if one is listed in the locale, otherwise return ch unchanged.
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[editar] Notas

Apenas 01:01 mapeamento de caracteres pode ser realizada por esta função, por exemplo, a letra maiúscula grega "Σ" tem duas formas minúsculas, dependendo da posição em uma palavra: "σ" e "ς". Uma chamada para std::tolower não pode ser utilizado para obter a forma correcta minúsculas neste caso.
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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[editar] Possível implementação

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

[editar] Exemplo

[editar] Veja também

converte um caractere em maiúsculas usando a faceta ctype de uma localidade
Original:
converts a character to uppercase using the ctype facet of a locale
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(modelo de função) [edit]
converte um caractere para minúsculo
Original:
converts a character to lowercase
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(função) [edit]
converte um caractere largo para minúsculas
Original:
converts a wide character to lowercase
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(função) [edit]