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<title>List.len — Ludic</title>
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<meta name="description" content="The number of elements in a slice.">
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<header class="nav"><div class="wrap nav-in"><a class="brand" href="index.html"><span class="logo">L</span> Ludic</a><button class="nav-toggle" aria-label="Toggle menu" aria-expanded="false">☰</button><nav class="nav-links"><a href="index.html">Home</a><a href="api.html">API Reference</a><a class="nav-cta" href="https://git.workshopsoft.io/workshopsoft/ludic">Source ↗</a></nav></div></header>
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<div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="ns-list.html">List</a> <span>›</span> <span class="here">List.len</span></div>
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<div class="item-head">
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<span class="kind-badge kind-method">method</span>
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<h1 id="top">List.len</h1>
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</div>
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<code class="sig">List.len(s) -> int</code>
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<div class="desc"><p>Returns how many elements <code>s</code> currently holds. It reads the slice's length, which changes as you <code>List.push</code> and <code>List.pop</code>, and is the same value as the bare <code>len(s)</code>. Use it to bound a loop, test for emptiness, or find the last index with <code>List.len(s) - 1</code>.</p></div>
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<div class="params"><h2>Parameters</h2><div class="param" id="param-s"><code class="pname">s</code><span class="pdesc">the slice to measure</span></div></div>
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<div class="examples"><h2>Example</h2><pre data-lang="ludic">program CountEnemies {
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var enemies: []int = new []int
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handler Report phase Update {
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let n = List.len(enemies)
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}
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}</pre></div>
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