From: Morton Goldberg <m_goldberg@...>
Date: 2006-12-28T14:26:36+09:00
Subject: Re: where does song.name come from?

On Dec 27, 2006, at 10:55 PM, chen li wrote:

> Hi all,
>
> On page 49 of Pickaxe 2 are some scripts:
>
> class Songlist
>   def with_title(title)
>      @songs.find{|song| title==song.name}
>   end
> end
>
> I just wonder where the method "name" comes from and
> what its purpose is here. I check for Index on page
> 809 and find "name" is mentioned in class Module only,
> which returns the name of module mod.

Very much earlier in the book (p. 26 in the PDF version) the class  
Song was defined as follows:

class Song
    def name
       @name
    end
    def artist
       @artist
    end
    def duration
       @duration
    end
end

That's where 'name' comes from. It's a reader method and it's purpose  
is to return the value of  the instance variable Song::@name. It has  
nothing to do with the method Module::name.

Regards, Morton