l">::</span><span class="identifier">unit_test</span><span class="special">::</span><span class="identifier">data</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">size</span><span class="special">()</span> <span class="keyword">const</span></code>
                indicates the size of the dataset. The returned type is a dedicated
                class <code class="computeroutput"><a class="link" href="../../../../boost/unit_test/data/size_t.html" title="Cl