title: What is out keyword in kotlin
body: <p>I am not able to understand and I couldn't find the meaning of <strong>out</strong> keyword in kotlin.</p>
  
  <p>You can check example here: </p>
  
  <pre><code>List&lt;out T&gt;
  </code></pre>
  
  <p>If any one can explain the meaning of this. It would be really appreciated.</p>