Ver el código de «cpp/locale/codecvt/encoding»

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{{tr_note}}
{{cpp/codecvt/title|encoding|do_encoding}}
{{cpp/locale/codecvt/navbar}}
{{dcl begin}}
{{dcl header | locale}}
{{dcl | num=1 | 1=
public:
int encoding() const
}}
{{dcl | num=2 | 1=
protected:
int do_encoding() const
}}
{{dcl end}}

1) {{tr|función miembro pública, llama a la función {{tt|do_encoding}} miembro de la clase más derivada .|public member function, calls the member function {{tt|do_encoding}} of the most derived class.}}

2) if the encoding represented by this codecvt facet maps each internal character to the same, constant number of external characters, returns that number. If the encoding is variable-length (e.g. UTF-8 or UTF-16), returns {{c|0}}. If the encoding is state-dependent, returns {{c|-1}}.

===Valor de retorno===
The exact number of {{tt|externT}} characters that correspond to one {{tt|internT}} character, if constant. {{c|0}} if the number varies, {{c|-1}} if the encoding is state-dependent.

{{tr|La especialización no convertir {{c|std::codecvt<char, char, std::mbstate_t>}} vuelve {{c|1}}|The non-converting specialization {{c|std::codecvt<char, char, std::mbstate_t>}} returns {{c|1}}}}

===Excepciones===
{{noexcept}}

===Ejemplo===
{{example
 | 
 | code=
#include <locale>
#include <iostream>
int main()
{
    std::cout << "en_US.utf8 is a variable-length encoding, encoding() returns "
              << std::use_facet<std::codecvt<wchar_t, char, std::mbstate_t>>(
                    std::locale("en_US.utf8")
              ).encoding() << '\n';

    std::cout << "zh_CN.gb18030 is also variable-length, encoding() == "
              << std::use_facet<std::codecvt<wchar_t, char, std::mbstate_t>>(
                    std::locale("zh_CN.gb18030")
              ).encoding() << '\n';

    std::cout << "ru_RU.koi8r is a single-byte encoding encoding() == "
              << std::use_facet<std::codecvt<wchar_t, char, std::mbstate_t>>(
                    std::locale("ru_RU.koi8r")
              ).encoding() << '\n';
}
 | output=
en_US.utf8 is a variable-length encoding, encoding() returns 0
zh_CN.gb18030 is also variable-length, encoding() == 0
ru_RU.koi8r is a single-byte encoding encoding() == 1
}}

===Ver también===
{{dsc begin}}
{{dsc inc | cpp/string/multibyte/dsc MB_CUR_MAX}}
{{dsc inc | cpp/locale/codecvt/dsc do_max_length}}
{{dsc end}}

[[de:cpp/locale/codecvt/encoding]]
[[en:cpp/locale/codecvt/encoding]]
[[fr:cpp/locale/codecvt/encoding]]
[[it:cpp/locale/codecvt/encoding]]
[[ja:cpp/locale/codecvt/encoding]]
[[pt:cpp/locale/codecvt/encoding]]
[[ru:cpp/locale/codecvt/encoding]]
[[zh:cpp/locale/codecvt/encoding]]

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