[Haskell-cafe] Nice way to calculate character frequency in astring

[Creighton Hogg]

On Tue, 25 Oct 2005, Simon Peyton-Jones wrote:

> | Ugh! These are all horrid. If something on the lines of
> | 
> | > calc = accumArray (+) 0 (minBound, maxBound) . (map (\x->(x,1)))
> | 
> | isn't fast enough, complain to the implementors! What's the
> | point of functional programming if one has to twist into a
> | shape that allows inspection of one's own fundament to get
> | stuff to run in decent time?
> 
> I agree.  
> 
> Better still, help us make it faster!
> 
> Simon

What can your average Haskell user do to help other than 
point out things they don't like?