Re: Class variables not inherited?

[Fernando Diaz]

yeah you want to make that variable static within the extern file.  right
now it's global as i think marcus said.  anyway, if you want to pass the
pointer down in inheritence you have two options :

1. you could just have an instance variable which is a copy of the static
variable (set at create time most likely), or

2.  leave out the "static" and just extern it in the derived class's
implementation.


F

On Wed, 24 May 2000, Paul Johnson wrote:

> When a class variable is declared in a the "m" file, before the
> implementation line, it works fine.  In order to have that variable be
> inherited by a subclass, what kind of declaration do I need in the "h"
> file.  I know its not extern. In case this is unclear, here is a bit of
> code
> 
> Agent.m:
> 
> #import "Agent.h"
> 
> World * worldForAgent;
> 
> @implementation Agent
> 
> +setWorld: (World *)aWorld;
> {
>   worldForAgent = aWorld;
>   return self;
> }
> 
> Works fine, but subclasses from Agent don't inherit the variable
> worldForAgent.
> 
> -- 
> Paul E. Johnson                       email: address@hidden
> Dept. of Political Science            http://lark.cc.ukans.edu/~pauljohn
> University of Kansas                  Office: (785) 864-9086
> Lawrence, Kansas 66045                FAX: (785) 864-5700
> 
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