Re: Inheritance and v4.0

[Steve Dekorte <steve@...>]

On Friday, June 14, 2002, at 01:43  AM, Benjohn Barnes wrote:
> on 13/6/02 11:35 PM, Steve Dekorte at steve@dekorte.com wrote:
> > On Thursday, June 13, 2002, at 11:10  AM, Gary Makin wrote:
> > > I'm having trouble finding an example of how to implement
> > > inheritance using version 4.0 of Lua.
> >
> > Here's one example:
> >
> > http://www.dekorte.com/Software/Lua/Object/Object.lua
>
> I understand most of this example code I think. I'm confused about the
> requirement for "addSlot" though. It's used in:
>
>     http://www.dekorte.com/Software/Lua/Object/Actor.lua
>
> Is it a mechanism to allow a method's scope to be a "derived" object, 
> rather
> than the object that the method is defined in?

Nope - just a convenience method that adds a variable, a setter and a 
getter all at once.
It's not necessary at all.

> Is there a document describing this approach to implementing a prototype
> object model?

It's based on NewtonScript's object model. You might check out some 
NewtonScript books.

Steve