override def plus()

in algebird-core/src/main/scala/com/twitter/algebird/immutable/BloomFilter.scala [350:373]

• 22 lines of code
• 8 McCabe index (conditional complexity)

      override def plus(left: Hash, right: Hash): Hash = left ++ right

      override def sum(t: TraversableOnce[Hash]): Hash =
        if (t.iterator.isEmpty) empty
        else {
          val iter = t.iterator
          var bs = BitSet.newEmpty(0)
          val hash = new Array[Int](numHashes)

          while (iter.hasNext) {
            iter.next() match {
              case Empty => ()
              case Item(item) =>
                hashToArray(item, hash)
                bs = bs.mutableAdd(hash)
              case Instance(bitset) =>
                val iter = bitset.iterator
                while (iter.hasNext) {
                  bs = bs.mutableAdd(iter.next())
                }
            }
          }
          if (bs.isEmpty) Empty else Instance(bs)
        }