Unit type intended for use as a well-behaved empty alternative in etl::variant. In particular, a variant of non-default-constructible types may list etl::monostate as its first alternative: this makes the variant itself default-constructible. More...

#include <etl/variant.hpp>

Friends
constexpr auto	operator<=> (monostate, monostate) noexcept -> etl::strong_ordering
	All instances of etl::monostate compare equal.

constexpr auto	operator== (monostate, monostate) noexcept -> bool
	All instances of etl::monostate compare equal.

Detailed Description

Unit type intended for use as a well-behaved empty alternative in etl::variant. In particular, a variant of non-default-constructible types may list etl::monostate as its first alternative: this makes the variant itself default-constructible.

Friends And Related Symbol Documentation

◆ operator<=>

auto operator<=>	(	monostate	,
		monostate	) -> etl::strong_ordering

friend

All instances of etl::monostate compare equal.

◆ operator==

auto operator==	(	monostate	,
		monostate	) -> bool

friend

All instances of etl::monostate compare equal.

The documentation for this struct was generated from the following file:

include/etl/_variant/monostate.hpp