that returns the memory unit distance between two iterators and advances...">memunit_step_fn&lt;Iterator&gt;</a>(it.<a class="code" href="g_i_l_0036.html#4d9de021528d2fae8de7b71dbc2e3909">step</a>())) {}
<a name="l00166"></a>00166 
<a name="l00169"></a><a class="code" href="g_i_l_0046.html#de1279c4ed222b6efb0867c038765ea1">00169</a>     reference <a class="code" href="g_i_l_0046.html#de1279c4ed222b6efb0867c038765ea1">operator[]</a>(difference_type d)<span class="keyword"> const </span>{ <span class="keyword