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std::char_traits<char>::eof, std::char_traits<wchar_t>::eof, std::char_traits<char8_t>::eof, std::char_traits<char16_t>::eof, std::char_traits<char32_t>::eof

static int_type eof();		(until C++11)
static constexpr int_type eof() noexcept;		(since C++11)

Returns a value not equivalent to any valid value of type char_type.

See CharTraits for the general requirements on character traits for X::eof.

(none)

`char_type`	`eof()`
char	`EOF`
wchar_t	`WEOF`
char8_t	an implementation-defined constant that cannot appear as a valid UTF-8 code unit
char16_t	an implementation-defined constant that cannot appear as a valid UTF-16 code unit
char32_t	an implementation-defined constant that cannot appear as a Unicode code point

Constant.