Where does song.name come from?

ruby-talk
1

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.

Thanks,

Li

···

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2

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

···

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.

3

chen li wrote:

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.

Earlier in the book there is:

class Song
  def name
    @name
  end
  ...

4

Gavin Kistner wrote:

>
Earlier in the book there is:

class Song
  def name
    @name
  end
  ...

Thanks.

The methods about class Song are everywhere on different pages.
Sometimes I get lost. I think it would be nice if somewhere in the
book(such as appendix) class Song and all its methods are put together.

Li

···

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