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Explanations about using tuples rather than arrays with variadic macro support.

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Edward Diener
2013-12-05 17:43:48 -05:00
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<html>
<head>
<title>tuples.html</title>
<link rel="stylesheet" type="text/css" href="../styles.css">
</head>
<body>
<h4>Tuples</h4>
<div>
A <i>tuple</i> is a simple comma-separated list of elements inside parenthesis.&nbsp;
For example,
</div>
<div class="code">
(<i>a</i>, <i>b</i>, <i>c</i>)
</div>
<div>
...is a <i>tuple</i> of <i>3</i> elements--<i>a</i>, <i>b</i>, and <i>c</i>.
</div>
<div>
<i>Tuples</i> are fast and easy to use.&nbsp;
However, all access to <i>tuples</i> requires knowledge of its size.
</div>
<div>
Elements of a <i>tuple</i> can be extracted with
<b>BOOST_PP_TUPLE_ELEM</b>.
</div>
<h4>Primitives</h4>
<ul>
<li><a href="../ref/tuple_elem.html">BOOST_PP_TUPLE_ELEM</a></li>
</ul>
<hr size="1">
<div style="margin-left: 0px;">
<i><EFBFBD> Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
</br><i><EFBFBD> Copyright Paul Mensonides 2002</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>
</div>
</body>
<head>
<title>tuples.html</title>
<link rel="stylesheet" type="text/css" href="../styles.css">
</head>
<body>
<h4>Tuples</h4>
<div> A <i>tuple</i> is a simple comma-separated list of elements inside
parenthesis.&nbsp; For example, </div>
<div class="code"> (<i>a</i>, <i>b</i>, <i>c</i>) </div>
<div> ...is a <i>tuple</i> of <i>3</i> elements--<i>a</i>, <i>b</i>, and
<i>c</i>. </div>
<div> <i>Tuples</i> are fast and easy to use.&nbsp; With variadic macro
support it is not necessary to know the size of a <i>tuple; </i>without
variadic macro support&nbsp;all access to <i>tuples</i> requires
knowledge of its size. Use a <i>tuple </i>instead of an <i>array</i> if
your compiler supports variadic macros, since a <i>tuple </i>has all of
the functionality as an <i>array </i>and is easier syntactically to use.</div>
<div> Elements of a <i>tuple</i> can be extracted with <b>BOOST_PP_TUPLE_ELEM</b>.
</div>
<h4>Primitives</h4>
<ul>
<li><a href="../ref/tuple_elem.html">BOOST_PP_TUPLE_ELEM</a></li>
</ul>
<hr size="1">
<div style="margin-left: 0px;"> <i><EFBFBD> Copyright <a href="http://www.housemarque.com"
target="_top">Housemarque Oy</a> 2002</i> <br>
<i><EFBFBD> Copyright Paul Mensonides 2002</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>
</div>
</body>
</html>