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preliminary set support

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[SVN r15908]
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Paul Mensonides
2002-10-13 05:47:23 +00:00
parent b2bd498a4f
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<html>
<head>
<title>BOOST_PP_SET_REST_N</title>
<link rel="stylesheet" type="text/css" href="../styles.css">
</head>
<body>
<div style="margin-left: 0px;">
The <b>BOOST_PP_SET_REST_N</b> macro expands to a <i>set</i> of all but the first <i>n</i> elements of a <i>set</i>.
</div>
<h4>Usage</h4>
<div class="code">
<b>BOOST_PP_SET_REST_N</b>(<i>n</i>, <i>list</i>)
</div>
<h4>Arguments</h4>
<dl>
<dt>n</dt>
<dd>
The number of elements to remove.
</dd>
<dt>list</dt>
<dd>
The <i>set</i> from which the elements are to be removed.
</dd>
</dl>
<h4>Remarks</h4>
<div>
This macro extracts <i>n</i> elements from the beginning of <i>set</i> and returns the remainder of <i>set</i> as a new <i>set</i>
</div>
<h4>See Also</h4>
<ul>
<li><a href="set_first_n.html">BOOST_PP_SET_FIRST_N</a></li>
</ul>
<h4>Requirements</h4>
<div>
<b>Header:</b> &nbsp;<a href="../headers/set/rest_n.hpp.html">&lt;boost/preprocessor/set/rest_n.hpp&gt;</a>
</div>
<h4>Sample Code</h4>
<div><pre>
#include &lt;<a href="../headers/arithmetic/inc.hpp.html">boost/preprocessor/arithmetic/inc.hpp</a>&gt;
#include &lt;<a href="../headers/set/elem.hpp.html">boost/preprocessor/set/elem.hpp</a>&gt;
#include &lt;<a href="../headers/set/first_n.hpp.html">boost/preprocessor/set/first_n.hpp</a>&gt;
#include &lt;<a href="../headers/set/rest_n.hpp.html">boost/preprocessor/set/rest_n.hpp</a>&gt;
#include &lt;<a href="../headers/set/size.hpp.html">boost/preprocessor/set/size.hpp</a>&gt;
#define NUMBERS \
(0)(1)(2)(3)(4)(5)(6)(7)(8)(9) \
(10)(11)(12)(13)(14)(15)(16)(17)(18)(19) \
(20)(21)(22)(23)(24)(25)(26)(27)(28)(29) \
(30)(31)(32)(33)(34)(35)(36)(37)(38)(39) \
(40)(41)(42)(43)(44)(45)(46)(47)(48)(49) \
(50)(51)(52)(53)(54)(55)(56)(57)(58)(59) \
(60)(61)(62)(63)(64)(65)(66)(67)(68)(69) \
(70)(71)(72)(73)(74)(75)(76)(77)(78)(79) \
(80)(81)(82)(83)(84)(85)(86)(87)(88)(89) \
(90)(91)(92)(93)(94)(95)(96)(97)(98)(99) \
(100)(101)(102)(103)(104)(105)(106)(107)(108)(109) \
(110)(111)(112)(113)(114)(115)(116)(117)(118)(119) \
(120)(121)(122)(123)(124)(125)(126)(127)(128)(129) \
(130)(131)(132)(133)(134)(135)(136)(137)(138)(139) \
(140)(141)(142)(143)(144)(145)(146)(147)(148)(149) \
(150)(151)(152)(153)(154)(155)(156)(157)(158)(159) \
(160)(161)(162)(163)(164)(165)(166)(167)(168)(169) \
(170)(171)(172)(173)(174)(175)(176)(177)(178)(179) \
(180)(181)(182)(183)(184)(185)(186)(187)(188)(189) \
(190)(191)(192)(193)(194)(195)(196)(197)(198)(199) \
(200)(201)(202)(203)(204)(205)(206)(207)(208)(209) \
(210)(211)(212)(213)(214)(215)(216)(217)(218)(219) \
(220)(221)(222)(223)(224)(225)(226)(227)(228)(229) \
(230)(231)(232)(233)(234)(235)(236)(237)(238)(239) \
(240)(241)(242)(243)(244)(245)(246)(247)(248)(249) \
(250)(251)(252)(253)(254)(255)(256) \
/**/
#define SUPER_ADD(x, y) <a href="set_elem.html">BOOST_PP_SET_ELEM</a>(y, <a href="set_rest_n.html">BOOST_PP_SET_REST_N</a>(x, NUMBERS))
SUPER_ADD(100, 100) // expands to 200
#define SUPER_SUB(x, y) \
<a href="set_size.html">BOOST_PP_SET_SIZE</a>( \
<a href="set_rest_n.html">BOOST_PP_SET_REST_N</a>( \
<a href="inc.html">BOOST_PP_INC</a>(y), \
<a href="set_first_n.html">BOOST_PP_SET_FIRST_N</a>( \
<a href="inc.html">BOOST_PP_INC</a>(x), NUMBERS \
) \
) \
) \
/**/
SUPER_SUB(67, 25) // expands to 42
</pre></div>
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