On 02 November 2005 17:06, Scherrer, Chad wrote:
>> Surely not... sum is defined by Haskell 98 as:
>>
>> sum = foldl (+) 0
>>
>> and this is exactly what GHC provides. Furthermore we have
>> specialised strict versions for Int and Integer.
>>
>
> I'd been using ghci for testing along the way and getting terrible
> results; does the specialization only apply to ghc per se?
Yes, you need 'ghc -O' to get the optimised versions. The performance
characteristics of unoptimised (including interpreted) code are often
quite different. You can load the optimised module into GHCi, of
course.
Cheers,
Simon
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