preprocessor/doc/ref/tuple_replace.html
Edward Diener b03b732a19 Updated documentation for tuples.
[SVN r86788]
2013-11-23 03:59:40 +00:00

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<title>BOOST_PP_TUPLE_REPLACE</title>
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<div style="margin-left: 0px;"> The <b>BOOST_PP_TUPLE_REPLACE</b> macro
replaces an element in a <i>tuple</i>.</div>
<h4>Usage</h4>
<div class="code"> <b>BOOST_PP_TUPLE_REPLACE</b>(<i>tuple</i>, <i>i</i>, <i>elem</i>)
<a href="../topics/variadic_macros.html#VNotation"><sup>(v)</sup></a></div>
<h4>Arguments</h4>
<dl>
<dt>tuple</dt>
<dd> A <i>tuple</i> to replace an element in. </dd>
<dt>i</dt>
<dd> The zero-based position in <i>tuple</i> of the element to be
replaced.&nbsp; Valid values range from <i>0</i> to <b>BOOST_PP_TUPLE_SIZE</b>(<i>tuple</i>)
- <i>1</i>.</dd>
<dt>elem</dt>
<dd> The replacement element. </dd>
</dl>
<h4>Remarks</h4>
<div> This macro uses <b>BOOST_PP_WHILE</b> interally.&nbsp; Therefore, to
use the <i>d</i> parameter passed from other macros that use <b>BOOST_PP_WHILE</b>,
see <b>BOOST_PP_TUPLE_REPLACE_D</b>.</div>
<h4>See Also</h4>
<ul>
<li><a href="tuple_replace_d.html">BOOST_PP_TUPLE_REPLACE_D</a></li>
</ul>
<h4>Requirements</h4>
<div> <b>Header:</b> &nbsp;<a href="../headers/tuple/replace.html">&lt;boost/preprocessor/tuple/replace.hpp&gt;</a>
</div>
<h4>Sample Code</h4>
<div>
<pre>#include &lt;<a href="../headers/tuple/replace.html">boost/preprocessor/tuple/replace.hpp</a>&gt;
#define TUPLE (a, x, c)
<a href="tuple_replace.html">BOOST_PP_TUPLE_REPLACE</a>(TUPLE, 1, b) // expands to (a, b, c))
</pre></div>
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<div style="margin-left: 0px;"> <i>© Copyright Edward Diener 2013</i> </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>
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