that supports a pattern</li>
</ul>
<h2 id="section-11">8.0</h2>
<p><em>Released September 2019</em></p>
<ul>
<li>Readonly members</li>
<li>Default interface methods</li>
<li>Pattern matching enhancements: Switch expressions, Property patterns, Tuple patterns, Positional patterns</li>
<li>Using declarations</li>
<li>Static local functions</li>
<li>Disposable ref structs</li>
<li>Nullable reference types</li>
<li>Asynchronous streams</li>
<li>Indices and ranges</li>
<li>Null-coalescing assignment</li>
<li>Unm