{</span>
  <span class=identifier>boost</span><span class=special>::</span><span class=identifier>gregorian</span><span class=special>::</span><span class=identifier>date</span> <span class=identifier>d</span><span class=special>;</span>
  <span class=identifier>std</span><span class=special>::</span><span class=identifier>string</span>            <span class=identifier>str</span><span class=special>;</span>    
<span class=special>};</span>

<span class=comment>// extracts a record's year</span>
<span clas