From: Sean Chittenden <sean-ruby-talk@...>
Date: 2001-07-24T05:56:45+09:00
Subject: [ruby-talk:18385] Re: More newbie questions


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> On Tue, 24 Jul 2001, Dave Thomas wrote:=20
> > Matt <matt@greenviolet.net> writes:
> >=20
> > > cgi.out { cgi.p { cgi.rfc1123_date (Time.now) } }
> >=20
> > rfc1123_date is a class method of CGI, as opposed to an instance
> > method. This means you'd call it using
> >=20
> >   CGI.rfc1123_date(Time.now)
> >=20
> > Here you're using the class (CGI) as the receiver of the message, as
> > opposed to an instance of the class (cgi in your example).
>=20
> OK. That worked! Now I'm confused (again) when to use the class and
> when to use an instance. For example take rfc1123_date. Why wasn't it
> inherited by the instance?

	I don't know the answer to that, but I'm sure someone else on
this list does.

> I admit to not knowing enough about OO, but
> the only other language I've ever really tried was Perl's OO. And I
> hated it. ;)

	It's not _that_ bad, is it?  After years of using it, I can't
contain the joy that using ruby brings to my tired blessed hash life. =20
;~)

	I'd check out page 26.27 of the Programming Ruby book. =20
Actually, check out the index under "Class -> instance" and "Class ->=20
method".  As for the diff between CGI class and instance methods, look=20
at 501, 504.  -sc


--=20
Sean Chittenden

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