" name="scala.collection.mutable.HashSet">HashSet</span>[<span class="extype" name="scala.Predef.String">String</span>]</span>, <span name="seq2">seq2: <span class="extype" name="scala.collection.mutable.HashSet">HashSet</span>[<span class="extype" name="scala.Predef.String">String</span>]</span>)</span><span class="result">: <span class="extype" name="scala.Double">Double</span></span>
      </span>
      </h4><span class="permalink">
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