From: Pat Maddox <pergesu@...>
Date: 2007-12-01T18:03:55+09:00
Subject: Re: Float Question

Or even the current release!

class Float
  def truncate(places = 0)
    return to_i if places == 0
    sprintf( "%0.#{places}f", self).to_f
  end
end

irb(main):007:0> 234.2342342.truncate 2
=> 234.23
irb(main):008:0> 234.2342342.truncate
=> 234

On Dec 1, 2007 12:30 AM, Armando Padilla <mando81@prodigy.net> wrote:
> Hey Chris thanks for the feedback.  Yea im using that but i was looking
> for something built into the Float stack. Something along the lines of
> Float.new(<number of values after decimal here>).  Basically something
> without the need to use sprintf.
>
> Next release of Ruby request?  lol
>
>
>
>
> Chris Cummer wrote:
> > What you're looking for is sprintf() though I suspect you know that
> > already from your comment below. Ie:
> >
> >       sprintf( "%0.02f", 234.2342342)
> >
> > You deride this as "string manipulation" though in effect as soon as
> > you display the number that's what you're doing, no matter where or
> > why you want to display it. The number only exists as a true float as
> > long as you don't look at it; as soon as you do, you've forced it to
> > achieve stringness.
> >
> > Makes sense?
> >
> >
> > On 30-Nov-07, at 11:29 PM, Armando Padilla wrote:
> >
> >> This is probably the stupidest question ive ever had to ask on any
> >> board so im sorry lol. :-p
> >>
> >> Yes i've googled and found a solution but i cant believe that the
> >> solution presented is correct or that the great minds behind ruby
> >> did not include something like this.
> >>
> >> I want to get a float 2.3333 to display as 2.33 or 2.333 etc.
> >>
> >> Now, i read the manual, Numerical, Float, Math sections but could
> >> not find a way to do this.  Yes you can use string manipulation but
> >> that just defeats the purpose of having something like this built
> >> into the Float stack.
> >>
> >> ex.  someFloat = Float.new(2)  ==> 2.12
> >>     someFloat = Float.new(5)  =>  2.12345
> >>
> >> Any thoughts?
> >>
> >>
> >
> >
>
>