From: Minkoo Seo <minkoo.seo@...>
Date: 2006-06-02T07:08:01+09:00
Subject: Re: Package and Namespace

------=_Part_3519_28279750.1149199678805
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

Okay, here's another example.

I have Point class provided by XYZ company.
I also have Point class provided by ABC company.

Now, I have to creates an instance of XYZ.Point from an
instance of ABC.Point. How can I solve this problem?
I have to mention ABC.Point and XYZ.Point in the same file.

Sincerely,
Minkoo Seo


On 6/2/06, Minkoo Seo <minkoo.seo@gmail.com> wrote:
>
> Thank you Kirk.
>
> Actually, the second question was my effort to think of some nice
> example which mandates namespace concept in Ruby.
>
> But, you actually solved my contrived example. And I'm wondering
> if there is any real problem that needs namespace.
>
> Sincerely,
> Minkoo Seo
>
>
> On 6/2/06, Kirk Haines <khaines@enigo.com> wrote:
> >
> > On Thursday 01 June 2006 3:52 pm, Minkoo Seo wrote:
> >
> > > As you know, every modern language has namespace facility.
> > > Even XML does have one to avoid name conflicts. Contrarily,
> > > Ruby does not have explicit namespace facility. Though module
> > > can provide with namespace facility it is not mandatory and
> > > is not being used even in standard library.
> > >
> > > So, I'd like to ask two questions:
> > >
> > > 1) Don't you think Ruby need a package/namespace concepts?
> >
> > It does, though, as you yourself point out.  The fact that it isn't
> > mandatory
> > isn't a problem.
> >
> > > 2) How would you solve the following problem:
> > >
> > > [Start of a.rb]
> > > # I want to declare class Struct because I love that name so much.
> > > # The name Struct perfectly describes my domain problem as well.
> > > class Struct
> > > end
> > >
> > > Foo = Struct.new :bar # I'd like to use Struct in standard library.
> > > [end of a.rb]
> >
> > Simple.  If you want to use Struct out of the standard library, then you
> > have
> > to put your Struct in a different space.
> >
> > module MyStuff
> > class Struct
> >    # Struct stuff be found here....
> > end
> > end
> >
> > my_struct = MyStuff::Struct.new
> >
> >
> > Kirk Haines
> >
> >
>
>

------=_Part_3519_28279750.1149199678805--