dle.scalar.Scalar</a>, which behaves
much like an <code>Option</code> in that it can be either an instance of <a href="scalar/NA$.html" class="extype" name="org.saddle.scalar.NA">org.saddle.scalar.NA</a>
or a <a href="scalar/Value.html" class="extype" name="org.saddle.scalar.Value">org.saddle.scalar.Value</a> case class:</p><pre><span class="kw">val</span> m = Mat(<span class="num">2</span>,<span class="num">2</span>,<span class="std">Array</span>(<span class="num">1</span>,<span class="num">2</span>,<span 