From: "Glen F. Pankow" <Glen.F.Pankow@...>
Date: 2009-12-02T05:24:16+09:00
Subject: Re: Float Arithmetic: Return A Fixnum When Float == Fixnum

Marnen Laibow-Koser wrote:
> MaggotChild wrote:
>> On Dec 1, 5:52�am, Marnen Laibow-Koser <mar...@marnen.org> wrote:
>>> The notation is misleading. �It's not a question of precision, but of
>>> type. �You can think of 2.0 as 2:Float, not 2 to 2 significant figures.
>> Yes, I do, but when it comes to printing, Float does not.
> 
> You can always redefine Float.to_s.  Changing the underlying type, 
> though, is probably a poor idea.
> 
>>>>>> j == j.to_i ? j.to_i : j
>>>> => 2
>>>> Is there a "better" way?
>>> Why even bother?
>> OCD
> 
> Apply your OCD in the right places, though! :)
> 
> Best,
> -- 
> Marnen Laibow-Koser
> http://www.marnen.org
> marnen@marnen.org

Ugly, but what the hey:

j = 2.0
sprintf('%g', j) --> "2"

j = 2.50000001
sprintf('%g', j) --> "2.5"

Works on integers, too:

j = 2
sprintf('%g', j) --> "2"

Glen