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    <title>BOOST_PP_REPEAT_z</title>
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    <div style="margin-left:  0px;"> The <b>BOOST_PP_REPEAT_<i>z</i></b> macro
      represents a reentry into the <b>BOOST_PP_REPEAT</b> repetition
      construct. </div>
    <h4>Usage</h4>
    <div class="code"> <b>BOOST_PP_REPEAT_</b> ## <i>z</i>(<i>count</i>, <i>macro</i>,
      <i>data</i>) </div>
    <h4>Arguments</h4>
    <dl>
      <dt>z</dt>
      <dd> The next available <b>BOOST_PP_REPEAT</b> dimension. </dd>
      <dt>count</dt>
      <dd> The number of repetitious calls to <i>macro</i>.&nbsp; Valid values
        range from <i>0</i> to <b>BOOST_PP_LIMIT_REPEAT</b>. </dd>
      <dt>macro</dt>
      <dd> A ternary operation of the form <i>macro</i>(<i>z</i>, <i>n</i>, <i>data</i>).&nbsp;
        This macro is expanded by <b>BOOST_PP_REPEAT</b> with the next
        available repetition depth, the current repetition number, and the
        auxiliary <i>data</i> argument.&nbsp; </dd>
      <dt>data</dt>
      <dd> Auxiliary data passed to <i>macro</i>. </dd>
    </dl>
    <h4>Remarks</h4>
    <div> This macro expands to the sequence:
      <div> <i>macro</i>(<i>z</i>, <i>0</i>, <i>data</i>) <i>macro</i>(<i>z</i>,
        <i>1</i>, <i>data</i>) ... <i>macro</i>(<i>z</i>, <i>count</i> - <i>1</i>,
        <i>data</i>) </div>
    </div>
    <div> At certain times, it may be necessary to perform the concatenation
      with <b>BOOST_PP_CAT</b> rather than the preprocessor token-pasting
      operator.&nbsp; This happens when the <i>z</i> value is a macro
      invocation itself.&nbsp; It needs a delay to allow it to expand.&nbsp; The
      syntax in such a scenario becomes:
      <div> <b>BOOST_PP_CAT</b>(<b>BOOST_PP_REPEAT_</b>, <i>z</i>)(<i>count</i>,
        <i>macro</i>, <i>data</i>) </div>
    </div>
    <h4>See Also</h4>
    <ul>
      <li><a href="cat.html">BOOST_PP_CAT</a></li>
      <li><a href="limit_repeat.html">BOOST_PP_LIMIT_REPEAT</a></li>
      <li><a href="repeat.html">BOOST_PP_REPEAT</a></li>
      <li><a href="repeat_z_macros.html"><span style="color: gray;">Macros with
            Z re-entrancy forms</span></a></li>
    </ul>
    <h4>Requirements</h4>
    <div> <b>Header:</b> &nbsp;<a href="../headers/repetition/repeat.html">&lt;boost/preprocessor/repetition/repeat.hpp&gt;</a>
    </div>
    <h4>Sample Code</h4>
    <div>
      <pre>#include &lt;<a href="../headers/arithmetic/inc.html">boost/preprocessor/arithmetic/inc.hpp</a>&gt;
#include &lt;<a href="../headers/punctuation/comma_if.html">boost/preprocessor/punctuation/comma_if.hpp</a>&gt;
#include &lt;<a href="../headers/repetition/repeat.html">boost/preprocessor/repetition/repeat.hpp</a>&gt;

#define TEXT(z, n, text) <a href="comma_if.html">BOOST_PP_COMMA_IF</a>(n) text

#define TEMPLATE(z, n, _) \
   <a href="comma_if.html">BOOST_PP_COMMA_IF</a>(n) \
   template&lt; \
      <a href="repeat_z.html">BOOST_PP_REPEAT_</a> ## z( \
         <a href="inc.html">BOOST_PP_INC</a>(n), \
         TEXT, class \
      ) \
   &gt; class T ## n \
   /**/

<a href="repeat.html">BOOST_PP_REPEAT</a>(3, TEMPLATE, nil)
   /*
   expands to:
      template&lt;class&gt; class T0,
      template&lt;class, class&gt; class T1,
      template&lt;class, class, class&gt; class T2
   */
</pre></div>
    <hr size="1">
    <div style="margin-left: 0px;"> <i>© Copyright <a href="http://www.housemarque.com"
          target="_top">Housemarque Oy</a> 2002</i> <br>
      <i>© Copyright Paul Mensonides 2002<br>
      </i><i>© Copyright Edward Diener 2014</i><br>
    </div>
    <div style="margin-left: 0px;">
      <p><small>Distributed under the Boost Software License, Version 1.0. (See
          accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a>
          or copy at <a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
    </div>
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