From: Hugh Sasse Staff Elec Eng <hgs@...>
Date: 2001-11-28T04:29:50+09:00
Subject: [ruby-talk:26691] Re: adding instance variables to an existing class.

On Wed, 28 Nov 2001, David Alan Black wrote:

> Hello --
>
> Hmmm....  I must be writing/testing the wrong thing.  Here's
> what I wrote:
>
>   class String
>     attr_writer :pos
>     def pos
>       @pos ||= 0
>     end
>
>     def thing(start = pos)
>       start
>     end
>   end
>
>   p "hi".thing         #  =>  0
>   p "bye".pos          #  =>  0
>
>
> Where do you get nil?

I got a warning I missed last time! -- I had test_any and test_many --
or thought I did. Test_many turned out to be called test_any, so I
in effect had:

     def thing(start = @pos)
       start
     end
which was giving me the error. The warning was telling me about the
redefinition.

all is working well now.  Thank you for your help and patience.
OK (2/2 tests  13 asserts)
	:-)

	Hugh
>
>
> David
>
> --