[Haskell-beginners] reverse [1..]

[Kim-Ee Yeoh]

Emanuel: I was trying to build infinite list from -inf to +inf.

Bob: What would you expect the number after -inf to be?

Wait a minute, let's just talk about the head of the list. What type is the
list element? Int? Integer? If Int, there's minBound :: Bounded Int => Int.
If Integer, no such instance exists!

So perhaps you want [minBound .. maxBound] :: [Int]?

-- Kim-Ee



On Tue, Dec 18, 2012 at 10:16 PM, Tom Davie <tom.davie at gmail.com> wrote:

>
> On 18 Dec 2012, at 14:35, Emanuel Koczwara <poczta at emanuelkoczwara.pl>
> wrote:
>
> > Hi,
> >
> > Dnia 2012-12-18, wto o godzinie 20:30 +0600, Alexander _ pisze:
> >> Hello,
> >>
> >>
> >>
> >> Here you try to reverse infinite list. What do you expect to get?
> >>
> >
> >  I was trying to build infinite list from -inf to +inf.
>
> What would you expect the number after -inf to be?
>
> Bob
>
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