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Added information about empty data.

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Edward Diener
2015-05-17 00:46:10 -04:00
parent 4360660e39
commit 633f1e679a
4 changed files with 101 additions and 105 deletions
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doc/data/lists.html
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<html>
<head>
<title>lists.html</title>
<link rel="stylesheet" type="text/css" href="../styles.css">
</head>
<body>
<h4>Lists</h4>
<div>
A <i>list</i> is a simple cons-style list with a head and a tail.&nbsp;
The head of a <i>list</i> is an element,
and the tail is either another <i>list</i> or <b>BOOST_PP_NIL</b>.
For example,
</div>
<div class="code">
(<i>a</i>, (<i>b</i>, (<i>c</i>, <b>BOOST_PP_NIL</b>)))
</div>
<div>
...is a <i>list</i> of <i>3</i> elements--<i>a</i>, <i>b</i>, and <i>c</i>.
</div>
<div>
This allows macro parameters to be variable in size and allows data states to change
size without the user explicitly keeping track of the size independently.
</div>
<div>
Elements of a <i>list</i> can be extracted with
<b>BOOST_PP_LIST_FIRST</b> and <b>BOOST_PP_LIST_REST</b>.&nbsp;
</div>
<h4>Primitives</h4>
<ul>
<li><a href="../ref/list_first.html">BOOST_PP_LIST_FIRST</a></li>
<li><a href="../ref/list_rest.html">BOOST_PP_LIST_REST</a></li>
<li><a href="../ref/nil.html">BOOST_PP_NIL</a></li>
</ul>
<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</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>
<meta content="text/html; charset=windows-1252" http-equiv="content-type">
<title>lists.html</title>
<link rel="stylesheet" type="text/css" href="../styles.css">
</head>
<body>
<h4>Lists</h4>
<div> A <i>list</i> is a simple cons-style list with a head and a
tail.&nbsp; The head of a <i>list</i> is an element, and the tail is
either another <i>list</i> or <b>BOOST_PP_NIL</b>. For example, </div>
<div class="code"> (<i>a</i>, (<i>b</i>, (<i>c</i>, <b>BOOST_PP_NIL</b>)))
</div>
<div> ...is a <i>list</i> of <i>3</i> elements--<i>a</i>, <i>b</i>, and <i>c</i>.
</div>
<div> This allows macro parameters to be variable in size and allows data
states to change size without the user explicitly keeping track of the
size independently.<br>
<br>
A list can be empty and therefore have a size of 0. An empty list is
represented by the notation <b>BOOST_PP_NIL.<br>
<br>
</b></div>
<div> Elements of a <i>list</i> can be extracted with <b>BOOST_PP_LIST_FIRST</b>
and <b>BOOST_PP_LIST_REST</b>.&nbsp; </div>
<h4>Primitives</h4>
<ul>
<li><a href="../ref/list_first.html">BOOST_PP_LIST_FIRST</a></li>
<li><a href="../ref/list_rest.html">BOOST_PP_LIST_REST</a></li>
<li><a href="../ref/nil.html">BOOST_PP_NIL</a></li>
</ul>
<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</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>