From: Florian Frank <flori@...>
Date: 2002-08-06T19:03:43+09:00
Subject: Re: Writing a method that's added to both Fixnum and Bignum

On Tue, 2002-08-06 at 10:46, Harry Ohlsen wrote:
> There HAS to be a better way to do it, but I just can't think of it.
> 
> Effectively, what I would have thought it should be is something like ...
> 
> class Bignum
>    def fred
>       # Do the calculation on self
>    end
> end
> 
> class Fixnum
>       # Coerce self into a Bignum, say "b" and then return b.fred
> end
> 
> But I can't think of how I would coerce the Fixnum into a Bignum.

Using a mixin would be a much cleaner possibility:

module Fred

  def fred
  end

end

class Bignum
  include Fred
end

class Fixnum
  include Fred
end

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