empty.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2019 Tobias Hienzsch
 
#ifndef TETL_ITERATOR_EMPTY_HPP
#define TETL_ITERATOR_EMPTY_HPP
 
#include <etl/_cstddef/size_t.hpp>
#include <etl/_utility/ignore_unused.hpp>
 
namespace etl {
 
/// Returns whether the given container is empty.
/// \ingroup iterator
 
template <typename C>
constexpr auto empty(C const& c) noexcept(noexcept(c.empty())) -> decltype(c.empty())
{
    return c.empty();
}
 
/// Returns whether the given container is empty.
/// \ingroup iterator
template <typename T, size_t N>
constexpr auto empty(T (&array)[N]) noexcept -> bool
{
    etl::ignore_unused(&array);
    return false;
}
 
} // namespace etl
 
#endif // TETL_ITERATOR_EMPTY_HPP