From: MonkeeSage <MonkeeSage@...>
Date: 2006-09-16T08:46:00+09:00
Subject: Re: arbitrary indexes

MonkeeSage wrote:
> The second implementation I posted allows for that.

You could also do it like this, and preserve the default functionality
but add the arbitrary indexing via passing an array:

class Array
  alias :_sqr_accsr :[]
  def [](*args)
    if args.size == 1 and
       args.at(0).instance_of?(Array)
      values_at(*args.at(0))
    else
      _sqr_accsr(*args)
    end
  end
end

a = [1,2,3,4,5,6,7,8,9]
p a[2] # => 3
p a[2,4] # => [3, 4, 5, 6]
p a[[2,4,6]] # => [3, 5, 7]

The point is: _use_ the language to your advantage, don't fight against
it.

Regards,
Jordan