On Thu, Feb 26, 2009 at 09:36:17PM +0300, Bulat Ziganshin wrote: > Thursday, February 26, 2009, 9:27:10 PM, you wrote: > > It was about this: I needed to generate "all possibilities" for some > > combinations and each of those had a numeric property, say from 1 to > > 10000; I then had to count how many of the possibilities were of a given > > "category". So I created this array, generated all combinations, and > > incremented the matching slot each time. > > it's histogram essentially? accumArray is doing so. internally, it's > the same loop using STArray, but accumArray provide you pure API for > such computations
And accumArray can also be used with UArray if laziness is a problem. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
