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<title>Regex.valid — Ludic</title>
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<meta name="description" content="True if the pattern is well-formed (compiles without error).">
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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-regex.html">Regex</a> <span>›</span> <span class="here">Regex.valid</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">Regex.valid</h1>
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<code class="sig">Regex.valid(pattern) -> bool</code>
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<div class="desc"><p>A convenience over <a href="regex-compile"><code>Regex.compile</code></a>: <code>true</code> when <code>pattern</code> compiles, <code>false</code> when it is malformed. Use it to validate a user- or mod-supplied pattern before relying on it.</p></div>
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<div class="params"><h2>Parameters</h2><div class="param" id="param-pattern"><code class="pname">pattern</code><span class="pdesc">the regular expression source</span></div></div>
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<div class="examples"><h2>Example</h2><pre data-lang="ludic">program Demo {
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entry {
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if Regex.valid("(a|b)+") { print(1) }
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if not Regex.valid("(unterminated") { print(2) }
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}
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}</pre></div>
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