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33 lines
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2 KiB
HTML
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<title>Regex.start — Ludic</title>
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<meta name="description" content="The start byte offset of group n, or -1 if it did not participate.">
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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.start</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.start</h1>
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</div>
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<code class="sig">Regex.start(match, n) -> int</code>
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<div class="desc"><p>Returns the byte offset where group <code>n</code> of <code>match</code> begins, or <code>-1</code> if the group did not participate. Group <code>0</code> is the whole match, so <code>Regex.start(m, 0)</code> is where the match begins.</p></div>
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<div class="params"><h2>Parameters</h2><div class="param" id="param-match"><code class="pname">match</code><span class="pdesc">a <code>Match</code> value</span></div><div class="param" id="param-n"><code class="pname">n</code><span class="pdesc">the group number</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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let m = Regex.find(" hi", "hi")
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print(Regex.start(m, 0))
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}
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}</pre></div>
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