At 12:25 PM +1000 12/4/06, Tony Morris wrote: > >I wish to pass a 2 dimensional array to use in a back-tracking >algorithm. Since I will be doing lots of inserts, a Data.Array is >unsuitable. It seems that a Map Int (Map Int a) is the most suitable >structure, but this seems cumbersome. > >Is there anything more appropriate? Map (Int, Int) a ?