On Mar 8, 2006, at 6:31 PM, Guyren Howe wrote:
On Mar 8, 2006, at 5:23 PM, Norman Palardy wrote:
On Mar 08, 2006, at 2:41 PM, Guyren Howe wrote:
On Mar 8, 2006, at 3:47 PM, Joseph J. Strout wrote:
This issue is probably my #1 time-waster and error-maker in
REALbasic, and fixing it would be a great boon to my productivity.
If you're using Events for your class extension, this problem
doesn't arise.
Events are the preferred means of class extension.
Perhaps your preferred means; but this is certainly not everyone's
preferred method.
I've seen this issue Joe refers to, but wasn't quite sure what was
going on. Now I understand.
Events seem clearly better than Method Overriding to me: the
relationship between superclass and subclass is much clearer and
self-documented, and you're much less likely to need to change all the
subclasses in order to implement a change in the superclass.
Can you offer an example of an advantage to method overriding that
outweighs these advantages, or a more common and complex use of method
overriding than return type covariance?
Take a look at my column in the RBD issue included in your REAL World
bag. In it, I make the claim that overriding was the more natural
approach in that application of the Chain of Responsibility pattern.
--------------
Charles Yeomans
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