is_swappable.hpp

Go to the documentation of this file.

// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2019 Tobias Hienzsch
 
#ifndef TETL_TYPE_TRAITS_IS_SWAPPABLE_HPP
#define TETL_TYPE_TRAITS_IS_SWAPPABLE_HPP
 
#include <etl/_type_traits/add_lvalue_reference.hpp>
#include <etl/_type_traits/is_swappable_with.hpp>
 
namespace etl {
 
/// If T is not a referenceable type (i.e., possibly cv-qualified void or
/// a function type with a cv-qualifier-seq or a ref-qualifier), provides a
/// member constant value equal to false. Otherwise, provides a member constant
/// value equal to etl::is_swappable_with<T&, T&>::value
template <typename T>
struct is_swappable : is_swappable_with<add_lvalue_reference_t<T>, add_lvalue_reference_t<T>>::type { };
 
// clang-format on
 
template <typename T>
inline constexpr bool is_swappable_v = is_swappable<T>::value;
 
} // namespace etl
 
#endif // TETL_TYPE_TRAITS_IS_SWAPPABLE_HPP