[Haskell-cafe] curious about sum

[Jochem Berndsen]

Keith Sheppard wrote:
> Is there any reason that sum isn't strict? I can't think of any case
> where that is a good thing.
> 
> Prelude> sum [0 .. 1000000]
> *** Exception: stack overflow

It is useful if the (+) is nonstrict; although I cannot think of any
useful mathematical structure where (+) would be nonstrict.

Regards,

-- 
Jochem Berndsen | jochem at functor.nl
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