Re: Objective C <--> COM comparison
Re: Objective C <--> COM comparison
- Subject: Re: Objective C <--> COM comparison
- From: "John C. Randolph" <email@hidden>
- Date: Wed, 29 May 2002 16:38:28 -0700
On Wednesday, May 29, 2002, at 04:20 PM, Richard Schreyer wrote:
To my knowledge, there is no equivalent to COM in ObjC/Cocoa.
Because ObjectiveC doesn't suffer from the fragile base class
problem (you can add 'virtual' methods to a class... at run
time!), it really isn't necessary for binary compatibility.
Actually, to be precise, Obj-C does have the fragile base class
problem, just not as severely as C++. If you add an ivar to a
class, you need to recompile any subclasses that access their
inherited ivars directly.
-jcr
John C. Randolph <email@hidden> (408) 974-8819
Sr. Cocoa Software Engineer,
Apple Worldwide Developer Relations
http://developer.apple.com/cocoa/index.html
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