<span class='id identifier rubyid_is_a?'>is_a?</span><span class='lparen'>(</span><span class='const'>Enumerable</span><span class='rparen'>)</span>
    <span class='id identifier rubyid_data'>data</span> <span class='op'>=</span> <span class='id identifier rubyid_data'>data</span><span class='period'>.</span><span class='id identifier rubyid_compact'>compact</span><span class='period'>.</span><span class='id identifier rubyid_map'>map</span><span class='lparen'>(</span><span class='op'>&amp;</span><span cl