perator</span><span class="p">[](</span><span class="k">const</span> <span class="n">Loc</span><span class="o">&amp;</span><span class="p">,</span><span class="k">const</span> <span class="n">cached_location_t</span><span class="o">&amp;</span><span class="p">);</span>

  <span class="c1">// Accessing iterators along a given dimension at the current location or at a given offset</span>
  <span class="k">template</span> <span class="o">&lt;</span><span class="kt">size_t</span> <span class="n">D</span><span c