2017-07-14 23:24:09 +00:00
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2017-07-14 23:30:16 +00:00
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2017-07-14 23:24:09 +00:00
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2017-07-14 23:30:16 +00:00
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<title>log::debug - Rust</title>
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2017-07-14 23:24:09 +00:00
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2017-07-14 23:30:16 +00:00
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2017-07-14 23:24:09 +00:00
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2017-07-14 23:30:16 +00:00
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<section id='main' class="content">
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2017-07-14 23:30:16 +00:00
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<h1 class='fqn'><span class='in-band'>Macro <a href='index.html'>log</a>::<wbr><a class="macro" href=''>debug</a></span><span class='out-of-band'><span id='render-detail'>
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2017-07-14 23:24:09 +00:00
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2017-07-14 23:30:16 +00:00
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</span><a class='srclink' href='../src/log/macros.rs.html#166-173' title='goto source code'>[src]</a></span></h1>
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<pre class="rust macro">
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<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">debug</span> {
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(<span class="ident">target</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">target</span>:<span class="ident">expr</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> { ... };
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($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) <span class="op">=></span> { ... };
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}</pre>
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<div class='docblock'><p>Logs a message at the debug level.</p>
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<p>Logging at this level is disabled if any of the following features are
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present: <code>max_level_off</code>, <code>max_level_error</code>, <code>max_level_warn</code>, or
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<code>max_level_info</code>.</p>
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<p>When building in release mode (i.e., without the <code>debug_assertions</code> option),
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logging at this level is also disabled if any of the following features are
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present: <code>release_max_level_off</code>, <code>release_max_level_error</code>,
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<code>release_max_level_warn</code>, or <code>release_max_level_info</code>.</p>
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<h1 id='examples' class='section-header'><a href='#examples'>Examples</a></h1>
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<pre class="rust rust-example-rendered">
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<span class="kw">let</span> <span class="ident">pos</span> <span class="op">=</span> <span class="ident">Position</span> { <span class="ident">x</span>: <span class="number">3.234</span>, <span class="ident">y</span>: <span class="op">-</span><span class="number">1.223</span> };
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<span class="macro">debug</span><span class="macro">!</span>(<span class="string">"New position: x: {}, y: {}"</span>, <span class="ident">pos</span>.<span class="ident">x</span>, <span class="ident">pos</span>.<span class="ident">y</span>);
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<span class="macro">debug</span><span class="macro">!</span>(<span class="ident">target</span>: <span class="string">"app_events"</span>, <span class="string">"New position: x: {}, y: {}"</span>, <span class="ident">pos</span>.<span class="ident">x</span>, <span class="ident">pos</span>.<span class="ident">y</span>);</pre>
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2017-07-14 23:24:09 +00:00
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