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35 lines
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2.2 KiB
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<title>Hash.of — Ludic</title>
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<meta name="description" content="The fast default string hash.">
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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-hash.html">Hash</a> <span>›</span> <span class="here">Hash.of</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">Hash.of</h1>
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</div>
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<code class="sig">Hash.of(s) -> int</code>
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<div class="desc"><p>The go-to hash for a string: turns text like <code>"grass_tile"</code> into a fast, stable 32-bit integer handle. <code>Hash.of</code> is the default when you don't care which algorithm is used — currently it is <a href="hash-fnv1a"><code>Hash.fnv1a</code></a>, FNV-1a over the bytes. Reach for it to key a lookup table by name, give content a compact id, or detect that a config string changed. The result is deterministic: the same string always produces the same value, on every platform and run. It is not for security — see the section note.</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 string to hash</span></div></div>
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<div class="examples"><h2>Example</h2><pre data-lang="ludic">program TileIds {
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entry {
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let grass = Hash.of("grass_tile") # a stable integer id for this tile name
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let water = Hash.of("water_tile")
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print(grass)
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print(water)
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}
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}</pre></div>
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