tetl-docs/index_8hpp_source.html

// SPDX-License-Identifier: BSL-1.0


#ifndef TETL_CONTAINER_INDEX_HPP

#define TETL_CONTAINER_INDEX_HPP


#include <etl/_concepts/emulation.hpp>

#include <etl/_contracts/check.hpp>

#include <etl/_cstddef/ptrdiff_t.hpp>

#include <etl/_iterator/begin.hpp>

#include <etl/_iterator/end.hpp>

#include <etl/_utility/forward.hpp>


namespace etl::detail {


template <typename Range, typename Index>

    requires(RandomAccessRange<Range>)

constexpr auto index(Range&& rng, Index&& i) noexcept -> decltype(auto)

{

    using etl::begin;

    using etl::end;


    TETL_PRECONDITION(static_cast<etl::ptrdiff_t>(i) < (end(rng) - begin(rng)));

    return begin(etl::forward<Range>(rng))[etl::forward<Index>(i)];

}

} // namespace etl::detail


#endif // TETL_CONTAINER_INDEX_HPP

begin.hpp

end.hpp

check.hpp

TETL_PRECONDITION
#define TETL_PRECONDITION(...)
Definition check.hpp:16

emulation.hpp

forward.hpp

etl::end
constexpr auto end(C &c) -> decltype(c.end())
Returns an iterator to the end (i.e. the element after the last element) of the given container c or ...
Definition end.hpp:14

etl::begin
constexpr auto begin(C &c) -> decltype(c.begin())
Returns an iterator to the beginning of the given container c or array array. These templates rely on...
Definition begin.hpp:20

etl::ptrdiff_t
TETL_BUILTIN_PTRDIFF ptrdiff_t
etl::ptrdiff_t is the signed integer type of the result of subtracting two pointers.
Definition ptrdiff_t.hpp:14

etl::forward
constexpr auto forward(remove_reference_t< T > &param) noexcept -> T &&
Forwards lvalues as either lvalues or as rvalues, depending on T. When t is a forwarding reference (a...
Definition forward.hpp:18

ptrdiff_t.hpp