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36 lines
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2 KiB
HTML
<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>List.pop — Ludic</title>
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<meta name="description" content="Remove and return the last element.">
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<link rel="stylesheet" href="base.css">
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<link rel="stylesheet" href="docs.css">
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</head>
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<body>
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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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<main class="wrap item">
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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.pop</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.pop</h1>
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</div>
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<code class="sig">List.pop(s) -> T</code>
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<div class="desc"><p>Removes the final element of <code>s</code> and returns it, shortening the slice by one. Together with <code>List.push</code> this makes a slice work as a stack: push to add, pop to take the most recent back off. The slice must be non-empty. Use it to unwind a history, process a work list, or undo the last action.</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">a non-empty slice</span></div></div>
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<div class="examples"><h2>Example</h2><pre data-lang="ludic">program UndoStack {
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var history: []int = new []int
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handler Undo phase Update {
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if List.len(history) > 0 {
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let last_action = List.pop(history)
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}
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}
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}</pre></div>
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<a class="back" href="api.html">← All symbols</a>
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</main>
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<script src="ludic-highlight.js"></script>
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<script>Ludic.highlightAll(); Ludic.installCards(); Ludic.flashTarget();</script>
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