Hi John & Edward,
On Mar 30, 2009, at 11:27 AM, John Shea wrote:
Hello Edward,
well since no one else has answered i will speculate a bit (it might
provoke someone wiser).
I assume that the Ruby and the Objective C class are magically married
together perhaps via some sort of proxy class - since you cant as far
as i know add to an objective C class more instance methods - and
inserting a compiled class into a ruby class must be also problematic
- anyway it seems complicated. So I assume that the ruby class is
actually still a separate class. I must admit i never tried to extend
a compiled object C class - and I surprised it works as well as it
does.
In MacRuby, a Ruby class is a true Objective-C class. We try to use
the Objective-C runtime for everything possible, however, because of
some limitations of Objective-C there are things we need to do on the
side, like for example maintaining instance variables (in Objective-C
you cannot add an instance variable dynamically to a class).
On 3/30/09, Edward Hynes <[email protected]> wrote:
Is there a way to access instance variables defined in an Objective-C
class from a Ruby extension?
It is currently not implemented, but it's technically possible. A good
work-around is to define accessors (properties) as John mentioned.
Laurent
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