re/Symbol-class.html">Symbol</a> instance that is equal to
a private symbol literal like <code>#_foo</code>.</p>
<pre class="language-dart"><code class="language-dart">const Symbol("_foo") // Invalid
</code></pre>
<p>The created instance overrides <a href="dart-core/Symbol/operator_equals.html">Object.==</a>.</p>
<p>The following text is non-normative:</p>
<p>Creating non-const Symbol instances may result in larger output.  If
possible, use <code>MirrorsUsed</code> from "dart:mirrors" to specify which names