ng">typedef std::ptrdiff_t difference_type;
</pre>
<h6>
<a name="boost_asio.reference.ip__basic_address_iterator_lt__address_v4__gt_.difference_type.h0"></a>
          <span class="phrase"><a name="boost_asio.reference.ip__basic_address_iterator_lt__address_v4__gt_.difference_type.requirements"></a></span><a class="link" href="difference_type.html#boost_asio.reference.ip__basic_address_iterator_lt__address_v4__gt_.difference_type.requirements">Requirements</a>
        </h6>
<p>
          <span class="emphas