ext-dark"></i></a></td></tr><tr><td><a href="#map2ToNoneNone(op)" id="map2ToNoneNone(op)">#</a></td><td class="member-name"><code class="function-or-value" data-guid="0dc7161b-da0c-49cc-936e-4efa403d01a3">map2ToNoneNone(op)</code></td><td class="member-name"><code class="function-or-value">op:Expr&lt;(&#x27;a option -&gt; &#x27;b option -&gt; &#x27;c option)&gt; -&gt; Expr&lt;&#x27;c option&gt;</code></td><td class="xmldoc"><a href="https://github.com/YaccConstructor/GraphBLAS-sharp/tree/master/src/GraphBLA