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Diffstat (limited to 'boost/geometry/iterators/has_one_element.hpp')
-rw-r--r-- | boost/geometry/iterators/has_one_element.hpp | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/boost/geometry/iterators/has_one_element.hpp b/boost/geometry/iterators/has_one_element.hpp new file mode 100644 index 0000000000..2f9acefc1e --- /dev/null +++ b/boost/geometry/iterators/has_one_element.hpp @@ -0,0 +1,29 @@ +// Boost.Geometry (aka GGL, Generic Geometry Library) + +// Copyright (c) 2014, Oracle and/or its affiliates. + +// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle + +// Licensed under the Boost Software License version 1.0. +// http://www.boost.org/users/license.html + +#ifndef BOOST_GEOMETRY_ITERATORS_HAS_ONE_ELEMENT_HPP +#define BOOST_GEOMETRY_ITERATORS_HAS_ONE_ELEMENT_HPP + + +namespace boost { namespace geometry +{ + + +// free function to test if an iterator range has a single element +template <typename Iterator> +inline bool has_one_element(Iterator first, Iterator beyond) +{ + return first != beyond && ++first == beyond; +} + + +}} // namespace boost::geometry + + +#endif // BOOST_GEOMETRY_ITERATORS_HAS_ONE_ELEMENT_HPP |