an class=identifier>list_inserter</span><span class=special>&lt; </span><span class=identifier>range_inserter</span><span class=special>&lt; </span><span class=identifier>vector_t </span><span class=special>&gt;, </span><span class=identifier>T </span><span class=special>&gt;
    </span><span class=keyword>operator</span><span class=special>=( </span><span class=identifier>T </span><span class=identifier>r </span><span class=special>)
    </span><span class=special>{
        </span><span class=keyword>retur