title: What does () mean in Scala?
body: <p>I've found a Scala code snippet which declares a method <code>&lt;init&gt;</code> and puts <code>()</code> right below the invocation.</p>
  
  <p>I have a question about line number 5. What does <code>()</code> mean here?</p>
  
  <pre><code>(() =&gt; {
    final class $anon extends MutableProjection {
      def &lt;init&gt;() = {
        super.&lt;init&gt;();
        ()
      };
      ...
    };
    new $anon()
  })
  </code></pre>
  
  <p>Here is a <a href="https://gist.github.com/marmbrus/9efb31d2b5154aea6652" rel="noreferrer">code</a> with full example.</p>