From: Timothy Goddard <interfecus@...>
Date: 2006-07-23T08:00:10+09:00
Subject: Re: Infinity

Others have answered the main question here but it's worth noting for
the future that just because it says infinity doesn't mean a constant
exists with that name. Check this out:

irb(main):001:0> class A; end
=> nil
irb(main):002:0> class B; end
=> nil
irb(main):003:0> A, B = B, A
(irb):3: warning: already initialized constant A
(irb):3: warning: already initialized constant B
=> [B, A]
irb(main):004:0> A
=> B
irb(main):005:0> B
=> A

The name is independent of constants.

hadley wickham wrote:
> irb(main):084:0> (-1.0/0.0)
> => -Infinity
> irb(main):086:0> (1.0/0.0)
> => Infinity
>
> but
>
> irb(main):087:0> Infinity
> NameError: uninitialized constant Infinity
>         from (irb):87
>         from :0
>
> is it possible to directly access/create a float representing positive
> or negative infinity?
> 
> Thanks,
> 
> Hadley