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28 <h2><span class="refentrytitle">Macro BOOST_VMD_ASSERT_IS_LIST_D</span></h2>
29 <p>BOOST_VMD_ASSERT_IS_LIST_D — Asserts that the sequence is a Boost PP list. Re-entrant version. </p>
31 <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
32 <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="header/boost/vmd/assert_is_list_hpp.html" title="Header <boost/vmd/assert_is_list.hpp>">boost/vmd/assert_is_list.hpp</a>>
34 </span>BOOST_VMD_ASSERT_IS_LIST_D(d, sequence)</pre></div>
35 <div class="refsect1">
36 <a name="idp84422816"></a><h2>Description</h2>
37 <p>The macro checks that the sequence is a Boost PP list. If it is not a Boost PP list, it forces a compiler error.</p>
38 <p>The macro normally checks for a Boost PP list only in debug mode. However an end-user can force the macro to check or not check by defining the macro BOOST_VMD_ASSERT_DATA to 1 or 0 respectively.</p>
39 <p>d = The next available BOOST_PP_WHILE iteration. sequence = a possible Boost PP list.</p>
40 <p>returns = Normally the macro returns nothing. If the sequence is a Boost PP list, nothing is
43 For VC++, because there is no sure way of forcing
44 a compiler error from within a macro without producing
45 output, if the sequence is not a Boost PP list the
46 macro forces a compiler error by outputting invalid C++.
48 For all other compilers a compiler error is forced
49 without producing output if the parameter is not a
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