David Barbour dmbarbour

## BFNum.hs
{-# LANGUAGE BangPatterns #-}

-- | Related: <http://www.cs.tufts.edu/~nr/cs257/archive/chris-okasaki/breadth-first.pdf>
module BFNum where

import Data.IntMap (IntMap)
import qualified Data.IntMap as IntMap

data Tree a
    = E
	{-# LANGUAGE BangPatterns #-}

	-- \| Related: <http://www.cs.tufts.edu/~nr/cs257/archive/chris-okasaki/breadth-first.pdf>
	module BFNum where

	import Data.IntMap (IntMap)
	import qualified Data.IntMap as IntMap

	data Tree a
	= E