CoolVLViewer/include/boost/geometry/iterators/detail/has_one_element.hpp

// Boost.Geometry

// Copyright (c) 2014-2021, Oracle and/or its affiliates.
// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle

// Licensed under the Boost Software License version 1.0.
// http://www.boost.org/users/license.html

#ifndef BOOST_GEOMETRY_ITERATORS_DETAIL_HAS_ONE_ELEMENT_HPP
#define BOOST_GEOMETRY_ITERATORS_DETAIL_HAS_ONE_ELEMENT_HPP


namespace boost { namespace geometry { namespace detail
{


// free function to test if an iterator range has a single element
template <typename Iterator>
inline bool has_one_element(Iterator first, Iterator last)
{
    return first != last && ++first == last;
}


}}} // namespace boost::geometry::detail


#endif // BOOST_GEOMETRY_ITERATORS_DETAIL_HAS_ONE_ELEMENT_HPP