Morton Goldberg
12/28/2006 5:27:00 AM
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