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- #include <boost/parameter/keyword.hpp>
- namespace graphs {
- namespace tag {
- // keyword tag type
- struct graph
- {
- typedef boost::parameter::forward_reference qualifier;
- };
- }
- namespace // unnamed
- {
- // A reference to the keyword object
- boost::parameter::keyword<tag::graph> const& _graph
- = boost::parameter::keyword<tag::graph>::instance;
- }
- }
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