From: "W. Kent Starr" <elderburn@...>
Date: 2001-02-24T03:06:49+09:00
Subject: [ruby-talk:11394] Re: Time without seconds (updated/fixed)

On Friday 23 February 2001 10:32, David Alan Black wrote:
> On Sat, 24 Feb 2001, Kevin Smith wrote:
> > ts wrote:
> > > Warning you can have a problem
> > > See that t is a Time object and not a MyTime object.
> >
> > Thanks. You are correct. Fortunately, that is
> > easily fixed:
> >
> > class MyTime < Time
> >         def MyTime.createFloor
> >                 t = Time.new
> >                 return MyTime.at(t.to_i() -
> > t.sec)
> >         end
> >         def toto
> >            puts "toto"
> >         end
> > end
> > t = MyTime.createFloor
> > p t.inspect
> > p t.type
> > t.toto
>
> Here's a followup question, based on playing around with this:
> Why do the two ways of doing this (which I've stashed into
> MyTime.floor) result in objects of different types?
>
>   class MyTime < Time
>     def MyTime.floor
>
>   # Way 1
>       t = Time.new
>       mt = MyTime.at t - t.sec
>
>   # Way 2
>       tt = MyTime.at (tm = Time.new) - tm.sec
>
>       [mt,tt].each do |ti|
>         puts "#{ti} is of type #{ti.type}"
>       end
>     end
>   end
>
>   MyTime.floor
>
>   Output:
>   Fri Feb 23 10:31:00 EST 2001 is of type MyTime
>   Fri Feb 23 10:31:00 EST 2001 is of type Time
>
>
FWIW

Time.type #-> Class
class MyTime < Time
end
MyTime.type #-> Class
a = Time.new
b = MyTime.new
a.type #-> Time
b.type #-> MyTime

It appears that a class is of type Class and instances of that class are of 
type #{Name_Of_That_Class}

Interesting (and useful) behavior :-)

Regards,

Kent Starr
elderburn@mindspring.com