[Haskell-cafe] Re: Incremental array updates

[Bulat Ziganshin]

Hello Daniel,

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


-- 
Best regards,
 Bulat                            mailto:Bulat.Ziganshin at gmail.com