[Haskell-cafe] newbie optimization question

Isaac Dupree isaacdupree at charter.net
Sun Oct 28 12:55:18 EDT 2007

Prabhakar Ragde wrote:
>> You could try giving divisors type signature:
>> divisors :: Int -> [Int]
> Thank you. That brings the time down to 0.5 seconds. I'm glad it was 
> something as simple as that. --PR

I assume GHC was smart enough to do inlining and such in this case, so 
the difference is that it defaulted to Integer, whose operations are 
somewhat slower.


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