title: With Scala's Set, is there a method analog to the containsAll method in Java's Set?
body: <p>While working through converting some Java code over to Scala, I discovered while there is a <code>contains</code> method for Scala's <code>Set</code>, there isn't a <code>containsAll</code> method. Am I just missing the correct method name?</p>
  
  <p>Here's a bit of code I worked up to fill in the gap so I could quickly get back to working. Is it sufficient, or am I missing some subtlety?</p>
  
  <pre><code>  def containsAll[A](set: Set[A], subset: Set[A]): Boolean =
      if (set.size &gt;= subset.size)
        subset.forall(a =&gt; set.contains(a))
      else
        false
  </code></pre>