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+<h1>Penlight</h1>
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+ <li><a href="../index.html">Documentation</a></li>
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+<h2>Contents</h2>
+<ul>
+<li><a href="#Functions">Functions</a></li>
+</ul>
+
+
+<h2>Libraries</h2>
+<ul class="nowrap">
+ <li><a href="../libraries/pl.html">pl</a></li>
+ <li><a href="../libraries/pl.app.html">pl.app</a></li>
+ <li><a href="../libraries/pl.array2d.html">pl.array2d</a></li>
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+ <li><a href="../libraries/pl.config.html">pl.config</a></li>
+ <li><a href="../libraries/pl.data.html">pl.data</a></li>
+ <li><a href="../libraries/pl.dir.html">pl.dir</a></li>
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+ <li><a href="../libraries/pl.import_into.html">pl.import_into</a></li>
+ <li><a href="../libraries/pl.input.html">pl.input</a></li>
+ <li><a href="../libraries/pl.lapp.html">pl.lapp</a></li>
+ <li><a href="../libraries/pl.lexer.html">pl.lexer</a></li>
+ <li><a href="../libraries/pl.luabalanced.html">pl.luabalanced</a></li>
+ <li><a href="../libraries/pl.operator.html">pl.operator</a></li>
+ <li><a href="../libraries/pl.path.html">pl.path</a></li>
+ <li><strong>pl.permute</strong></li>
+ <li><a href="../libraries/pl.pretty.html">pl.pretty</a></li>
+ <li><a href="../libraries/pl.seq.html">pl.seq</a></li>
+ <li><a href="../libraries/pl.sip.html">pl.sip</a></li>
+ <li><a href="../libraries/pl.strict.html">pl.strict</a></li>
+ <li><a href="../libraries/pl.stringio.html">pl.stringio</a></li>
+ <li><a href="../libraries/pl.stringx.html">pl.stringx</a></li>
+ <li><a href="../libraries/pl.tablex.html">pl.tablex</a></li>
+ <li><a href="../libraries/pl.template.html">pl.template</a></li>
+ <li><a href="../libraries/pl.test.html">pl.test</a></li>
+ <li><a href="../libraries/pl.text.html">pl.text</a></li>
+ <li><a href="../libraries/pl.types.html">pl.types</a></li>
+ <li><a href="../libraries/pl.url.html">pl.url</a></li>
+ <li><a href="../libraries/pl.utils.html">pl.utils</a></li>
+ <li><a href="../libraries/pl.xml.html">pl.xml</a></li>
+</ul>
+<h2>Classes</h2>
+<ul class="nowrap">
+ <li><a href="../classes/pl.Date.html">pl.Date</a></li>
+ <li><a href="../classes/pl.List.html">pl.List</a></li>
+ <li><a href="../classes/pl.Map.html">pl.Map</a></li>
+ <li><a href="../classes/pl.MultiMap.html">pl.MultiMap</a></li>
+ <li><a href="../classes/pl.OrderedMap.html">pl.OrderedMap</a></li>
+ <li><a href="../classes/pl.Set.html">pl.Set</a></li>
+</ul>
+<h2>Manual</h2>
+<ul class="nowrap">
+ <li><a href="../manual/01-introduction.md.html">Introduction</a></li>
+ <li><a href="../manual/02-arrays.md.html">Tables and Arrays</a></li>
+ <li><a href="../manual/03-strings.md.html">Strings. Higher-level operations on strings.</a></li>
+ <li><a href="../manual/04-paths.md.html">Paths and Directories</a></li>
+ <li><a href="../manual/05-dates.md.html">Date and Time</a></li>
+ <li><a href="../manual/06-data.md.html">Data</a></li>
+ <li><a href="../manual/07-functional.md.html">Functional Programming</a></li>
+ <li><a href="../manual/08-additional.md.html">Additional Libraries</a></li>
+ <li><a href="../manual/09-discussion.md.html">Technical Choices</a></li>
+</ul>
+<h2>Examples</h2>
+<ul class="nowrap">
+ <li><a href="../examples/seesubst.lua.html">seesubst.lua</a></li>
+ <li><a href="../examples/sipscan.lua.html">sipscan.lua</a></li>
+ <li><a href="../examples/symbols.lua.html">symbols.lua</a></li>
+ <li><a href="../examples/test-cmp.lua.html">test-cmp.lua</a></li>
+ <li><a href="../examples/test-data.lua.html">test-data.lua</a></li>
+ <li><a href="../examples/test-listcallbacks.lua.html">test-listcallbacks.lua</a></li>
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+ <li><a href="../examples/testclone.lua.html">testclone.lua</a></li>
+ <li><a href="../examples/testconfig.lua.html">testconfig.lua</a></li>
+ <li><a href="../examples/testglobal.lua.html">testglobal.lua</a></li>
+ <li><a href="../examples/testinputfields.lua.html">testinputfields.lua</a></li>
+ <li><a href="../examples/testinputfields2.lua.html">testinputfields2.lua</a></li>
+ <li><a href="../examples/testxml.lua.html">testxml.lua</a></li>
+ <li><a href="../examples/which.lua.html">which.lua</a></li>
+</ul>
+
+</div>
+
+<div id="content">
+
+<h1>Module <code>pl.permute</code></h1>
+<p>Permutation operations.</p>
+<p> Dependencies: <a href="../libraries/pl.utils.html#">pl.utils</a>, <a href="../libraries/pl.tablex.html#">pl.tablex</a></p>
+
+
+<h2><a href="#Functions">Functions</a></h2>
+<table class="function_list">
+ <tr>
+ <td class="name" nowrap><a href="#order_iter">order_iter (a)</a></td>
+ <td class="summary">an iterator over all order-permutations of the elements of a list.</td>
+ </tr>
+ <tr>
+ <td class="name" nowrap><a href="#order_table">order_table (a)</a></td>
+ <td class="summary">construct a table containing all the order-permutations of a list.</td>
+ </tr>
+ <tr>
+ <td class="name" nowrap><a href="#list_iter">list_iter (...)</a></td>
+ <td class="summary">an iterator over all permutations of the elements of the given lists.</td>
+ </tr>
+ <tr>
+ <td class="name" nowrap><a href="#list_table">list_table (...)</a></td>
+ <td class="summary">construct a table containing all the permutations of a set of lists.</td>
+ </tr>
+ <tr>
+ <td class="name" nowrap><a href="#iter">iter (...)</a></td>
+ <td class="summary">deprecated.</td>
+ </tr>
+ <tr>
+ <td class="name" nowrap><a href="#table">table (...)</a></td>
+ <td class="summary">deprecated.</td>
+ </tr>
+</table>
+
+<br/>
+<br/>
+
+
+ <h2 class="section-header "><a name="Functions"></a>Functions</h2>
+
+ <dl class="function">
+ <dt>
+ <a name = "order_iter"></a>
+ <strong>order_iter (a)</strong>
+ </dt>
+ <dd>
+ an iterator over all order-permutations of the elements of a list.
+ Please note that the same list is returned each time, so do not keep references!
+
+
+ <h3>Parameters:</h3>
+ <ul>
+ <li><span class="parameter">a</span>
+ list-like table
+ </li>
+ </ul>
+
+ <h3>Returns:</h3>
+ <ol>
+
+ an iterator which provides the next permutation as a list
+ </ol>
+
+
+
+
+</dd>
+ <dt>
+ <a name = "order_table"></a>
+ <strong>order_table (a)</strong>
+ </dt>
+ <dd>
+ construct a table containing all the order-permutations of a list.
+
+
+ <h3>Parameters:</h3>
+ <ul>
+ <li><span class="parameter">a</span>
+ list-like table
+ </li>
+ </ul>
+
+ <h3>Returns:</h3>
+ <ol>
+
+ a table of tables
+ </ol>
+
+
+
+ <h3>Usage:</h3>
+ <ul>
+ <pre class="example">permute.order_table {<span class="number">1</span>,<span class="number">2</span>,<span class="number">3</span>} <span class="comment">--&gt; {{2,3,1},{3,2,1},{3,1,2},{1,3,2},{2,1,3},{1,2,3}}</span></pre>
+ </ul>
+
+</dd>
+ <dt>
+ <a name = "list_iter"></a>
+ <strong>list_iter (...)</strong>
+ </dt>
+ <dd>
+ an iterator over all permutations of the elements of the given lists.
+
+
+ <h3>Parameters:</h3>
+ <ul>
+ <li><span class="parameter">...</span>
+ list-like tables, they are nil-safe if a length-field <code>n</code> is provided (see <a href="../libraries/pl.utils.html#pack">utils.pack</a>)
+ </li>
+ </ul>
+
+ <h3>Returns:</h3>
+ <ol>
+
+ an iterator which provides the next permutation as return values in the same order as the provided lists, preceeded by an index
+ </ol>
+
+
+
+ <h3>Usage:</h3>
+ <ul>
+ <pre class="example"><span class="keyword">local</span> strs = utils.pack(<span class="string">"one"</span>, <span class="keyword">nil</span>, <span class="string">"three"</span>) <span class="comment">-- adds an 'n' field for nil-safety
+</span><span class="keyword">local</span> bools = utils.pack(<span class="keyword">true</span>, <span class="keyword">false</span>)
+<span class="keyword">local</span> iter = permute.list_iter(strs, bools)
+
+<span class="global">print</span>(iter()) <span class="comment">--&gt; 1, one, true
+</span><span class="global">print</span>(iter()) <span class="comment">--&gt; 2, nil, true
+</span><span class="global">print</span>(iter()) <span class="comment">--&gt; 3, three, true
+</span><span class="global">print</span>(iter()) <span class="comment">--&gt; 4, one, false
+</span><span class="global">print</span>(iter()) <span class="comment">--&gt; 5, nil, false
+</span><span class="global">print</span>(iter()) <span class="comment">--&gt; 6, three, false</span></pre>
+ </ul>
+
+</dd>
+ <dt>
+ <a name = "list_table"></a>
+ <strong>list_table (...)</strong>
+ </dt>
+ <dd>
+ construct a table containing all the permutations of a set of lists.
+
+
+ <h3>Parameters:</h3>
+ <ul>
+ <li><span class="parameter">...</span>
+ list-like tables, they are nil-safe if a length-field <code>n</code> is provided
+ </li>
+ </ul>
+
+ <h3>Returns:</h3>
+ <ol>
+
+ a list of lists, the sub-lists have an 'n' field for nil-safety
+ </ol>
+
+
+
+ <h3>Usage:</h3>
+ <ul>
+ <pre class="example"><span class="keyword">local</span> strs = utils.pack(<span class="string">"one"</span>, <span class="keyword">nil</span>, <span class="string">"three"</span>) <span class="comment">-- adds an 'n' field for nil-safety
+</span><span class="keyword">local</span> bools = utils.pack(<span class="keyword">true</span>, <span class="keyword">false</span>)
+<span class="keyword">local</span> results = permute.list_table(strs, bools)
+<span class="comment">-- results = {
+</span><span class="comment">-- { "one, true, n = 2 }
+</span><span class="comment">-- { nil, true, n = 2 },
+</span><span class="comment">-- { "three, true, n = 2 },
+</span><span class="comment">-- { "one, false, n = 2 },
+</span><span class="comment">-- { nil, false, n = 2 },
+</span><span class="comment">-- { "three", false, n = 2 },
+</span><span class="comment">-- }</span></pre>
+ </ul>
+
+</dd>
+ <dt>
+ <a name = "iter"></a>
+ <strong>iter (...)</strong>
+ </dt>
+ <dd>
+ deprecated.
+
+
+ <h3>Parameters:</h3>
+ <ul>
+ <li><span class="parameter">...</span>
+
+
+
+ </li>
+ </ul>
+
+
+
+ <h3>See also:</h3>
+ <ul>
+ <a href="../libraries/pl.permute.html#order_iter">permute.order_iter</a>
+ </ul>
+
+
+</dd>
+ <dt>
+ <a name = "table"></a>
+ <strong>table (...)</strong>
+ </dt>
+ <dd>
+ deprecated.
+
+
+ <h3>Parameters:</h3>
+ <ul>
+ <li><span class="parameter">...</span>
+
+
+
+ </li>
+ </ul>
+
+
+
+ <h3>See also:</h3>
+ <ul>
+ <a href="../libraries/pl.permute.html#order_iter">permute.order_iter</a>
+ </ul>
+
+
+</dd>
+</dl>
+
+
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