un">.</span><span class="pln">shape </span><span class="pun">== [</span><span class="lit">1</span><span class="pun">, </span><span class="lit">4</span><span class="pun">]);
</span><span class="kwd">assert</span><span class="pun">(</span><span class="pln">r1<wbr/></span><span class="pun">.</span><span class="pln">evaluate</span><span class="pun">()<wbr/>.</span><span class="pln">as</span><span class="pun">!</span><span class="typ">float </span><span class="pun">== [</span><span class="lit">1.0f</span><span c