opnsense-src/doc/modules/lyaml.functional.html

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<h1>lyaml 6.2.8</h1>
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<li><a href="../index.html">Index</a></li>
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<h2>Contents</h2>
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<li><a href="#Functions">Functions</a></li>
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<h2>Modules</h2>
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<li><a href="../modules/lyaml.html">lyaml</a></li>
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<li><strong>lyaml.functional</strong></li>
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<h1>Module <code>lyaml.functional</code></h1>
<p>
</p>
<p>
</p>
<h2><a href="#Functions">Functions</a></h2>
<table class="function_list">
<tr>
<td class="name" nowrap><a href="#isnull">isnull (x)</a></td>
<td class="summary"><code>lyaml.null</code> predicate.</td>
</tr>
<tr>
<td class="name" nowrap><a href="#iscallable">iscallable (x)</a></td>
<td class="summary">Callable predicate.</td>
</tr>
<tr>
<td class="name" nowrap><a href="#anyof">anyof (fns)</a></td>
<td class="summary">Compose a function to try each callable with supplied args.</td>
</tr>
<tr>
<td class="name" nowrap><a href="#id">id (...)</a></td>
<td class="summary">Return arguments unchanged.</td>
</tr>
</table>
<h2><a href="#Tables">Tables</a></h2>
<table class="function_list">
<tr>
<td class="name" nowrap><a href="#NULL">NULL</a></td>
<td class="summary"><code>lyaml.null</code> value.</td>
</tr>
</table>
<br/>
<br/>
<h2 class="section-header "><a name="Functions"></a>Functions</h2>
<dl class="function">
<dt>
<a name = "isnull"></a>
<strong>isnull (x)</strong>
</dt>
<dd>
<code>lyaml.null</code> predicate.
<h3>Parameters:</h3>
<ul>
<li><span class="parameter">x</span>
operand
</li>
</ul>
<h3>Returns:</h3>
<ol>
<span class="types"><span class="type">bool</span></span>
<code>true</code> if <em>x</em> is <code>lyaml.null</code>.
</ol>
</dd>
<dt>
<a name = "iscallable"></a>
<strong>iscallable (x)</strong>
</dt>
<dd>
Callable predicate.
<h3>Parameters:</h3>
<ul>
<li><span class="parameter">x</span>
operand
</li>
</ul>
<h3>Returns:</h3>
<ol>
<span class="types"><span class="type">bool</span></span>
<code>true</code> if <em>x</em> is a function has a __call metamethod
</ol>
<h3>Usage:</h3>
<ul>
<pre class="example">r = iscallable(x) <span class="keyword">and</span> x(...)</pre>
</ul>
</dd>
<dt>
<a name = "anyof"></a>
<strong>anyof (fns)</strong>
</dt>
<dd>
Compose a function to try each callable with supplied args.
<h3>Parameters:</h3>
<ul>
<li><span class="parameter">fns</span>
<span class="types"><a class="type" href="https://www.lua.org/manual/5.1/manual.html#5.5">table</a></span>
list of functions to try
</li>
</ul>
<h3>Returns:</h3>
<ol>
<span class="types"><span class="type">function</span></span>
<p>a new function to call <em>...</em> functions, stopping</p>
<pre><code>and returning the first non-nil result, if any
</code></pre>
</ol>
</dd>
<dt>
<a name = "id"></a>
<strong>id (...)</strong>
</dt>
<dd>
Return arguments unchanged.
<h3>Parameters:</h3>
<ul>
<li><span class="parameter">...</span>
arguments
</li>
</ul>
<h3>Returns:</h3>
<ol>
<em>...</em>
</ol>
</dd>
</dl>
<h2 class="section-header "><a name="Tables"></a>Tables</h2>
<dl class="function">
<dt>
<a name = "NULL"></a>
<strong>NULL</strong>
</dt>
<dd>
<code>lyaml.null</code> value.
</dd>
</dl>
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<i style="float:right;">Last updated 2022-10-22 17:12:03 </i>
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