     {
         var wasPresent:Boolean = contains(element);
 
-        if (wasPresent) {
+        if (wasPresent)
+        {
             delete dict[element];
             _length--;
         }
-
         return wasPresent;
     }
 

        var newSet:Set = a.clone();

        if (a !== b)
            newSet.addIterable(b.dict);

        return newSet;
    }

        {
            newSet = new Set();
            for each (item in a.dict)
            {
                if (b.contains(item))
                {
                    newSet.add(item);
                }
            }
        }

        return newSet;
