 respectively, as follows:</p><pre>f.col(<span class="lit">'a'</span>) == Frame(<span class="lit">'a'</span>-&gt;Vec(<span class="num">1</span>,<span class="num">2</span>,<span class="num">3</span>))
f.row(<span class="num">0</span>) == Frame(<span class="lit">'a'</span>-&gt;Vec(<span class="num">1</span>), <span class="lit">'b'</span>-&gt;Vec(<span class="num">4</span>))
f.row(<span class="num">0</span>-&gt;<span class="num">1</span>) == Frame(<span class="lit">'a'</span>-&gt;Vec(<span class="num">1</span>