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     Copyright (c) Jeremy Siek, Lie-Quan Lee, and Andrew Lumsdaine 2000
    
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<Head>
<Title>Boost Graph Library: null_visitor</Title>
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<BR Clear>

<H1>
<pre>
null_visitor
</pre>
</H1>

This is an <a href="./EventVisitor.html">EventVisitor</a> that
does nothing.

<h3>Model of</h3>

<a href="./EventVisitor.html">EventVisitor</a>

<H2>Associated Types</H2>

<table border>

<tr>
<th>Type</th><th>Description</th>
</tr>

<tr>
<td><tt>null_visitor::event_filter</tt></td>
<td>
This type is <tt>void</tt>
</td>
</tr>

</table>

<h3>Member Functions</h3>

<p>

<table border>
<tr>
<th>Member</th><th>Description</th>
</tr>

<tr>
<td><tt>
null_visitor();
</tt></td>
<td>
Default constructor.
</td>
</tr>

<tr>
<td><tt>
template &lt;class X, class Graph&gt;<br>
void operator()(X x, const Graph& g);
</tt></td>
<td>
This does nothing.
</td>
</tr>

</table>


<br>
<HR>
<TABLE>
<TR valign=top>
<TD nowrap>Copyright &copy; 2000-2001</TD><TD>
<A HREF="http://www.boost.org/people/jeremy_siek.htm">Jeremy Siek</A>,
Indiana University (<A
HREF="mailto:jsiek@osl.iu.edu">jsiek@osl.iu.edu</A>)<br>
<A HREF="http://www.boost.org/people/liequan_lee.htm">Lie-Quan Lee</A>, Indiana University (<A HREF="mailto:llee@cs.indiana.edu">llee@cs.indiana.edu</A>)<br>
<A HREF="https://homes.cs.washington.edu/~al75">Andrew Lumsdaine</A>,
Indiana University (<A
HREF="mailto:lums@osl.iu.edu">lums@osl.iu.edu</A>)
</TD></TR></TABLE>

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