operator==(std::text_encoding)

 

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)

Diagnostics library

Memory management library

Metaprogramming library (C++11)

General utilities library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Strings library

Text processing library

Numerics library

Date and time library

Input/output library

Filesystem library (C++17)

Concurrency support library (C++11)

Execution support library (C++26)

Technical specifications

Symbols index

External libraries

 

Text processing library

Localization library

Regular expressions library (C++11)

Formatting library (C++20)

Null-terminated sequence utilities

Byte strings

Multibyte strings

Wide strings

Primitive numeric conversions

to_chars (C++17) to_chars_result (C++17) from_chars (C++17) from_chars_result (C++17) chars_format (C++17)

Text encoding identifications

text_encoding (C++26)

 

std::text_encoding

Member functions

Creation

text_encoding::text_encoding

text_encoding::literal

text_encoding::environment

Observers

text_encoding::mib

text_encoding::name

text_encoding::aliases

text_encoding::environment_is

Helpers

text_encoding::comp-name

Non-member functions

operator==(std::text_encoding)

Member types

text_encoding::id

text_encoding::aliases_view

Helper classes

hash<std::text_encoding>

 

friend constexpr bool operator==( const text_encoding& a,                                   const text_encoding& b ) noexcept;	(1)	(since C++26)
friend constexpr bool operator==( const text_encoding& a, id i ) noexcept;	(2)	(since C++26)

Performs comparison operations on text_encoding objects.

1) Compares two text_encoding objects. The objects compare equal if and only if comp-name (a.name(), b.name()) is true when both a.mib() and b.mib() are equal to id::other, or a.mib() is equal to b.mib().

2) Compare text_encoding object with a MIBenum value. The objects compare equal if and only if a.mib() is equal to i.

These functions are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when std::text_encoding is an associated class of the arguments.

The != operator is synthesized from operator==.

Parameters

a, b	-	text_encoding objects to compare
i	-	id value to compare with the MIBenum value contained in a

Return value

1) a.mib() == id::other && b.mib() == id::other
    ? comp-name (a.name(), b.name())
    : a.mib() == b.mib().

2) a.mib() == i.

See also

operator==operator!= (removed in C++20)

equality comparison between locale objects (public member function of std::locale)