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33 lines
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1.9 KiB
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<title>Os.stderr_write — Ludic</title>
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<meta name="description" content="Write a string to standard 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-os.html">Os</a> <span>›</span> <span class="here">Os.stderr_write</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">Os.stderr_write</h1>
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</div>
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<code class="sig">Os.stderr_write(s)</code>
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<div class="desc"><p>Writes a string to standard error verbatim. Standard error is the right stream for diagnostics, warnings, and usage messages: it stays separate from a tool's real output on standard out, so a caller can capture one without the other.</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 write</span></div></div>
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<div class="examples"><h2>Example</h2><pre data-lang="ludic">program StderrWrite {
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entry {
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Os.stderr_write("warning: using defaults\n")
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print(0)
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}
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}</pre></div>
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