"identifier">v</span><span class="special">.</span><span class="identifier">push_back</span><span class="special">(</span><span class="number">3.0</span><span class="special">);</span>
<span class="identifier">test_generator_attr</span><span class="special">(</span><span class="string">"1.0\n2.0\n3.0\n"</span><span class="special">,</span> <span class="identifier">columns</span><span class="special">(</span><span class="number">1</span><span class="special">)[*</span><span class="identifier">double_</span><