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

 

C++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Execution support library (C++26)

Technical specifications

Symbols index

External libraries

 

Strings library

Null-terminated strings

Byte strings

Multibyte strings

Wide strings

Classes

basic_string

basic_string_view (C++17)

char_traits

 

std::char_traits

Member functions

char_traits::assign

char_traits::eqchar_traits::lt

char_traits::move

char_traits::copy

char_traits::compare

char_traits::length

char_traits::find

char_traits::to_char_type

char_traits::to_int_type

char_traits::eq_int_type

char_traits::eof

char_traits::not_eof

 

static int_type not_eof( int_type e );		(constexpr since C++11) (noexcept since C++11)

Given e, produces a suitable value that is not equivalent to eof.

This function is typically used when a value other than eof needs to be returned, such as in implementations of std::basic_streambuf::overflow().

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

Parameters

e

-

value to analyze

Return value

e if e and eof value are not equivalent, or some other non-eof value otherwise.

Complexity

Constant.

See also

eof [static]

returns an eof value (public static member function)