From: MikkelFJ <mikkelj-anti-spam@...1.dknet.dk>
Date: 2001-08-11T22:43:34+09:00
Subject: [ruby-talk:19526] Re: the way class variables work


<jweirich@one.net> wrote in message
news:m266bulq1f.fsf@skaro.access.one.net...
> >>>>> "David" == David Alan Black <dblack@candle.superlink.net> writes:

> Class variable mimic "static" variables in Java or C++.  Class
> instance variables are instance variables in the class object.

I was thinking about the C++ analogy as well. But it doesn't hold.
If you derive a class in C++ , any static members would have to be
re-implemented in the derived class.
The derived class will not share the static member. In templates you don't
have to explicitly declare the instance member implementation, but it still
creates a new instance.
This is an important aspect of buffer-management in container classes -
although it might actually have been better to share the buffer impl.
between family members.

Mikkel