| 2000-05-01 | 25.45 |     28.37 |
</code></pre>
<p>If we now get the actual type of the column's data member, we can see that it is
a concrete type.</p>
<pre><code class="language-clojure">user&gt; (-&gt; (ds/update-column stocks-lag "price-lag" dtype/clone)
          (get "price-lag")
          (dtype/as-concrete-buffer))
#array-buffer&lt;float64&gt;[560]
[39.81, 39.81, 36.35, 43.22, 28.37, 25.45, 32.54, 28.40, 28.40, 24.53, 28.02, 23.34, 17.65, 24.84, 24.00, 22.25, 27.56, 28.14, 29.70, 26.93, ...]
</code