From: Robert Klemme <bob.news@...>
Date: 2005-08-12T21:16:15+09:00
Subject: Re: Array redefinition problem

Leslie Viljoen wrote:
> Hello!
>
> I have a large program which needs to be able to use Postgres OR
> MySQL. Since the MySQL module's query result has a num_rows method
> and Postgres returns an array, I thought I'd just redefine Array like
> this:
>
> class Array
>  def num_rows
>    return length
>  end
> end
>
> But in another line (@entries = Array.new) I get:
>
> /var/www/ruby/core.rb:443:in `initialize': wrong number of arguments
> (0 for 2) (ArgumentError)
>
> Now if I do the same thing in a small test program, I get no errors.
> This works:
>
> class Array
>   def num_rows
>     return length
>   end
> end
>
> res = Array.new
> puts res.num_rows
>
> In the large program I am not redefining Array anywhere else - what
> else can
> cause this error?

My guess is that it's unrelated to your change of the Array class.  Did
you check line 443 of core.rb?

    robert