[Haskell] specification of sum

[Cale Gibbard]

On 01/11/05, John Meacham <john at repetae.net> wrote:
> The solution would be to bring 'sum' and 'product' into the Num class so
> the most efficient version for each type can be used and the default is
> no worse than the current non-class versions. (this is even pretty much
> completly backwards compatable so could be considered for haskell 06)
>
> I'd also like to see 'join' and 'ap' added to Monad while we are at it.
>
>         John
>

Yes! I completely agree :)
 - Cale