-based information.</p>
<p><span class="bold"><strong>Template Parameters</strong></span></p>
<p><span class="bold"><strong>date_type</strong></span></p>
<p>The date_type is a concrete date_type. The date_type must define a duration_type and a calendar_type. </p>
<div class="refsect2">
<a name="id-1.3.12.15.3.20.3.4.6"></a><h3>
<a name="boost.date_time.date_itr_baseconstruct-copy-destruct"></a><code class="computeroutput">date_itr_base</code> 
        public
       construct/copy/destruct</h3>
<div class="o