compare.hh File Reference

This file provides some concepts introduced in the C++20 standard library <compare> and <concepts> not yet available in all library implementation. More...

#include <compare>
#include <concepts>
#include <type_traits>
#include <utility>

Go to the source code of this file.

Classes
struct	Dune::Std::compare_three_way
	A functor implementing the three-way comparison on the arguments. More...

Namespaces
namespace	Dune
	Dune namespace.
namespace	Dune::Std
	Namespace for features backported from new C++ standards.

Concepts
concept	Dune::Std::three_way_comparable
	The concept std::three_way_comparable specifies that the three way comparison operator <=> on T yield results consistent with the comparison category implied by Cat.
concept	Dune::Std::three_way_comparable_with
	The concept std::three_way_comparable_with specifies that the three way comparison operator <=> on (possibly mixed) T and U operands yield results consistent with the comparison category implied by Cat. Comparing mixed operands yields results equivalent to comparing the operands converted to their common type.

Detailed Description

This file provides some concepts introduced in the C++20 standard library <compare> and <concepts> not yet available in all library implementation.

The code is partially extracted from https://en.cppreference.com/w/cpp/utility/compare.