33 lines
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2.2 KiB
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33 lines
No EOL
2.2 KiB
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<title>Log.trace — Ludic</title>
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<meta name="description" content="Log at the trace level (0) — the most verbose.">
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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-log.html">Log</a> <span>›</span> <span class="here">Log.trace</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">Log.trace</h1>
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</div>
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<code class="sig">Log.trace(msg, [key, value]...) -> void</code>
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<div class="desc"><p>Logs <code>msg</code> at the **trace** level (0), the most verbose — the fine-grained "I am here, this is the value" tracing you turn on only when hunting a specific problem. It appears on stderr as <code>[TRACE] msg</code>, followed by any structured <code>key=value</code> fields, but only when the threshold set by <a href="log-set_level"><code>Log.set_level</code></a> is 0. Because trace is usually filtered out, keep the calls wherever they help; a disabled level costs only a comparison.</p></div>
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<div class="params"><h2>Parameters</h2><div class="param" id="param-msg"><code class="pname">msg</code><span class="pdesc">the message string</span></div></div>
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<div class="examples"><h2>Example</h2><pre data-lang="ludic">program Trace {
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entry {
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Log.set_level(0)
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Log.trace("spawned entity", "id", 7, "at", "cave")
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}
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}</pre></div>
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