From: George Ogata <george.ogata@...>
Date: 2006-12-04T11:36:41+09:00
Subject: Re: number format

On 12/4/06, Li Chen <chen_li3@yahoo.com> wrote:
> Hi all,
>
> I have a number, for example, 1.123456789. What is the Ruby way to
> change it into whatever number of floating points such as 1.12,
> 1.123,1.1234568 or 1.12345679.
>
> Thanks,
>
> Li
>
> --
> Posted via http://www.ruby-forum.com/.
>
>

It might be better to leave the precision alone until you print it, in
which case, you can print it with #sprintf or String#% or similar:

irb(main):001:0> '%.2f' % 1.23456789
=> "1.23"
irb(main):002:0> '%.5f' % 1.23456789
=> "1.23457"