
BOOST_PARAMETER_NAME(index_map)
BOOST_PARAMETER_NAME(color_map)

namespace boost {

template <class T = int>
struct dfs_visitor
{};

int vertex_index = 0;

}''') -->
<!-- @test('compile') -->
<p>The arguments to <tt class="docutils literal">BOOST_PARAMETER_FUNCTION</tt> are:</p>
<ol class="arabic simple">
<li>The return type of the resulting function template.  Parentheses
around the return type prevent any commas it might contain from
confusing the preprocessor, and are always required.</li>
<li>The name 