ass size_t">size_t</a></code>
                that can indicate an <span class="emphasis"><em>infinite</em></span> dataset size.
              </li>
<li class="listitem">
                an enum called <code class="computeroutput"><span class="identifier">arity</span></code>
                indicating the arity of the samples returned by the dataset
              </li>
</ul></div>
<p>
            Once a dataset class <code class="computeroutput"><span class="identifier">D</span></code>
            is declar