[Haskell-cafe] Re: Incremental array updates

Ross Paterson ross at soi.city.ac.uk
Thu Feb 26 11:39:05 EST 2009

On Thu, Feb 26, 2009 at 05:31:34PM +0100, Daniel Kraft wrote:
> Well, my main problem was the lazy evaluation...

No, your main problem was that you were creating 100,000 arrays,
each only a little different from the one before.

> For this example program... yes of course :)  I'm trying to do so when  
> possible, but for my real problem I couldn't figure out a nice way to do  
> it like that, unfortunately.  Which does not mean it is impossible of  
> course, but maybe just I need more experience in functional  
> programming... :D

Writing imperative programs in Haskell may not be the best way to gain
that experience.  What is the pattern of updates in your actual program?

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