Ketil Malde wrote: > > George Russell <firstname.lastname@example.org> writes: > > > In addition, I suggest that, since it is widely agreed that the instances of > > Enum for Float and Double > > And (Ratio a)? Yes, you've got a point there. They'd none of 'em be missed. Of course mathematicians are well aware that rational numbers can be enumerated, just not the way the Haskell standard does it . . .