.. Copyright 2023 Julien Blanc
   Distributed under the Boost Software License, Version 1.0.
   https://www.boost.org/LICENSE_1_0.txt

indexed_span observers
======================

.. _indexed_span_empty:
.. cpp:function:: constexpr bool indexed_span::empty() const

    :returns: true if the sequence of elements is empty, ie ``size() == 0``

.. _indexed_span_size:
.. cpp:function:: constexpr size_t size() const

    :returns: The number of elements in the span (ie, `Indexer::size``).