ng</span> <span class="special">&gt;</span> <span class="identifier">param</span> <span class="special">=</span> <span class="identifier">settings</span><span class="special">[</span><span class="string">"WriteInterval"</span><span class="special">])</span>
        <span class="special">{</span>
            <span class="keyword">unsigned</span> <span class="keyword">int</span> <span class="identifier">sec</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</sp