1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> 4<title>Macro BOOST_VMD_ASSERT_IS_ARRAY_D</title> 5<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="index.html" title="Chapter 1. The Variadic Macro Data Library 1.9"> 8<link rel="up" href="header/boost/vmd/assert_is_array_hpp.html" title="Header <boost/vmd/assert_is_array.hpp>"> 9<link rel="prev" href="BOOST_VMD_ASSERT_IS_ARRAY.html" title="Macro BOOST_VMD_ASSERT_IS_ARRAY"> 10<link rel="next" href="header/boost/vmd/assert_is_empty_hpp.html" title="Header <boost/vmd/assert_is_empty.hpp>"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td> 15<td align="center"><a href="../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="BOOST_VMD_ASSERT_IS_ARRAY.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="header/boost/vmd/assert_is_array_hpp.html"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="header/boost/vmd/assert_is_empty_hpp.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="refentry"> 26<a name="BOOST_VM_idm45699314046944"></a><div class="titlepage"></div> 27<div class="refnamediv"> 28<h2><span class="refentrytitle">Macro BOOST_VMD_ASSERT_IS_ARRAY_D</span></h2> 29<p>BOOST_VMD_ASSERT_IS_ARRAY_D — Asserts that the sequence is a Boost PP array. Re-entrant version. </p> 30</div> 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_array_hpp.html" title="Header <boost/vmd/assert_is_array.hpp>">boost/vmd/assert_is_array.hpp</a>> 33 34</span>BOOST_VMD_ASSERT_IS_ARRAY_D(d, sequence)</pre></div> 35<div class="refsect1"> 36<a name="idm45529681065264"></a><h2>Description</h2> 37<p>The macro checks that the sequence is a Boost PP array. If it is not a Boost PP array, it forces a compiler error.</p> 38<p>The macro normally checks for a Boost PP array 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 sequence.</p> 40<p>returns = Normally the macro returns nothing. If the sequence is a Boost PP array, nothing is 41 output. 42 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 array the 46 macro forces a compiler error by outputting invalid C++. 47 48 For all other compilers a compiler error is forced 49 without producing output if the sequence is not a 50 Boost PP array. 51 </p> 52</div> 53</div> 54<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 55<td align="left"></td> 56<td align="right"><div class="copyright-footer">Copyright © 2010-2017 Tropic Software 57 East Inc</div></td> 58</tr></table> 59<hr> 60<div class="spirit-nav"> 61<a accesskey="p" href="BOOST_VMD_ASSERT_IS_ARRAY.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="header/boost/vmd/assert_is_array_hpp.html"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="header/boost/vmd/assert_is_empty_hpp.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 62</div> 63</body> 64</html> 65
