et :)</span>
<span class="kt">Matcher</span><span class="o">.</span><span class="k">default</span><span class="o">.</span><span class="nf">register</span><span class="p">(((</span><span class="kt">Int</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">Int</span><span class="p">)</span><span class="o">.</span><span class="k">self</span><span class="p">)</span> <span class="p">{</span> <span class="p">(</span><span class="n">lhs</span><span class="p">,</span> <span class="n">rhs</spa