From: Robert Dober <robert.dober@...>
Date: 2007-01-28T09:48:14+09:00
Subject: Re: Question about digits

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On 1/28/07, Xavier Noria <fxn@hashref.com> wrote:
>
> On Jan 28, 2007, at 12:35 AM, CHubas wrote:
>
> > While playing a little with Ruby, I've been looking for a function
> > each_digit, or something similar, and I couldn't find any (standard
> > nor library). I think it'd be useful to have a function like that.
> > It's pretty simple to implement one for Integers
> >
> > class Integer
> >     def each_digit(base = 10, &block)
> >         return if zero?
> >         (self/base).each_digit(base, &block)
> >         yield self % base
> >     end
> > end
> >
> > A first approach. Of course, it would be a little more complicated for
> > negatives and Floats, specially dealing with precision.
>
> Good. I'd expect each_digit to return strings though, since a digit
> is a symbol, not a number:
>
>    class Integer
>      def each_digit(base=10, want_sign=false)


           yield '-' if  want_sign && self  <  0  #  to continue  debugging
my code;)

       abs.to_s(base).each_byte do |b|
>          yield b.chr
>        end
>      end
>    end
>
> -- fxn
>
>
>
>
>


-- 
"The best way to predict the future is to invent it."
- Alan Kay

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