From: Phrogz <gavin@...>
Date: 2006-12-31T01:40:09+09:00
Subject: Re: with and without Song#to_s again

chen li wrote:
> I have the following script. I don't call Song#to_s in
> my  script but I can print all the attributes of a
> song. Why is that?

chen li, you can find this answer yourself.
1) Open a console and type:
ri Kernel.puts

2) See that it says that it's the same as $stdout.puts. Type:
ri IO.puts

3) See that it says that it does the same thing as print does. Type:
ri IO.print

4) See that it tells you that it calls the to_s method of any objects
that aren't strings.