[Haskell-cafe] Preventing sharing

Tom Ellis tom-lists-haskell-cafe-2013 at jaguarpaw.co.uk
Mon Dec 21 11:25:08 UTC 2015

On Mon, Dec 21, 2015 at 08:17:10PM +0900, Oleg wrote:
> The old article
>         Preventing memoization in (AI) search problems
>         http://okmij.org/ftp/Haskell/index.html#memo-off
> deals with the problem, explaining the trick to deliberately confuse
> GHC so that it won't perform memoization (sharing). Yes, I know how
> bad this confusing of GHC sounds: which is part of my argument that
> lazy evaluation by default was a mistake.

Hi Oleg,

As I explained here


-fno-full-laziness fixes the space leak issue in your iterative deepening

This isn't a problem with laziness.  It's a problem with performing a time
optimization which is a space pessimization.  In the absence of the
"optimization" there is no problem.


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