title: How to filter None's out of List[Option]?
body: <p>If I have a <code>List[Option[A]]</code> in Scala, what is the idiomatic way to filter out the <code>None</code> values?</p>
  
  <p>One way is to use the following:</p>
  
  <pre><code>val someList: List[Option[String]] = List(Some("Hello"), None, Some("Goodbye"))
  someList.filter(_ != None)
  </code></pre>
  
  <p>Is there a more "idiomatic" way? This does seem pretty simple.</p>