From: Ed Sinjiashvili <edsin@...>
Date: 2002-04-03T22:04:37+09:00
Subject: Re: rcr

Tobias Reif <tobiasreif@pinkjuice.com> writes:

> Paul Duncan wrote:
> 
> 
> > class Array
> >   def rand
> >     raise RuntimeError, 'Array#rand(): empty array' unless length > 0
> >     at Kernel::rand(length).floor
> >   end
> > end
> 
> 
> or
> 
> class Array
>    def any
>      if empty?
>        nil
>      else
>        self[rand length]
>      end
>    end
> end
or 

class Array
  def any
    return nil if empty?
    at(rand length) # should be a little faster 
  end
end