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<link title="Pa_lwt_log" rel="Chapter" href="Pa_lwt_log.html"><title>Pa_lwt_log</title>
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<h1>Module <a href="type_Pa_lwt_log.html">Pa_lwt_log</a></h1>
<pre><span class="keyword">module</span> Pa_lwt_log: <code class="code"><span class="keyword">sig</span></code> <a href="Pa_lwt_log.html">..</a> <code class="code"><span class="keyword">end</span></code></pre><div class="info module top">
Logging facility
<p>
It replaces expression of the form:
<p>
<pre class="codepre"><code class="code"> <span class="constructor">Lwt_log</span>.info_f ~section <span class="string">"x = %d"</span> x<br>
</code></pre>
<p>
by
<p>
<pre class="codepre"><code class="code"> <span class="keyword">if</span> <span class="constructor">Lwt_log</span>.<span class="constructor">Section</span>.level section <= <span class="constructor">Lwt_log</span>.<span class="constructor">Info</span> <span class="keyword">then</span><br>
<span class="constructor">Lwt_log</span>.info_f ~section <span class="string">"x = %d"</span> x<br>
<span class="keyword">else</span><br>
return ()<br>
</code></pre>
<p>
Note:
<p>
<ul>
<li>the application must be complete. For example: <code class="code"><span class="constructor">Log</span>.info <span class="string">"%d"</span></code>
will make compilation to fail</li>
</ul>
<ul>
<li>it also add the command line flags "-lwt-debug" to keep all debug
messages. By default debug messages are removed.</li>
</ul>
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