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| <h4>Arrays</h4> |
| <div> An <i>array</i> is a data structure consisting of a two-element <i>tuple</i>. |
| The first element is the number of elements in the <i>array</i>. |
| The second element is another <i>tuple</i> of the elements in the <i>array</i>. |
| For example, </div> |
| <div class="code"> (<i>3</i>, (<i>a</i>, <i>b</i>, <i>c</i>)) </div> |
| <div> ...is an <i>array</i> of <i>3</i> elements--<i>a</i>, <i>b</i>, and |
| <i>c</i>. </div> |
| <div> The primary strength of <i>arrays</i> is that they store their own |
| size. Because of this, access to elements does not require the |
| size. It only requires that an element exists at a certain index. </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>With variadic macro support a <i>tuple </i>has all of the |
| functionality as an <i>array</i>, knows its own size, and is easier |
| syntactically to use. Because of that an <i>array</i> should be used, as |
| opposed to a <i>tuple</i>, only if your compiler does not support |
| variadic macros.<br> |
| <br> |
| Elements of an <i>array</i> can be extracted with <b>BOOST_PP_ARRAY_ELEM</b>, |
| an <i>array's</i> size can be extracted with <b>BOOST_PP_ARRAY_SIZE</b>, |
| and an <i>array</i> can be converted to the more primitive <i>tuple</i> |
| data structure with <b>BOOST_PP_ARRAY_DATA</b>. </div> |
| <h4>Primitives</h4> |
| <ul> |
| <li><a href="../ref/array_data.html">BOOST_PP_ARRAY_DATA</a></li> |
| <li><a href="../ref/array_elem.html">BOOST_PP_ARRAY_ELEM</a></li> |
| <li><a href="../ref/array_size.html">BOOST_PP_ARRAY_SIZE</a></li> |
| </ul> |
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| <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> |
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