Re: obj-c: how do i call an instance method in my super's super?
Re: obj-c: how do i call an instance method in my super's super?
- Subject: Re: obj-c: how do i call an instance method in my super's super?
- From: Bill Bumgarner <email@hidden>
- Date: Wed, 21 Sep 2005 19:26:51 -0700
On Sep 21, 2005, at 5:20 PM, Ken Victor wrote:
for the time being, i've put a "proxy" method in
subClassOfBaseClass that simpl;y calls baseClass's foobar and i
call this "proxy" method from foobar in
subClassOfSubClassOfBaseClass. but it seems that there aught to be
a more direct approach (without having to talk directly to the
runtime code).
Remove the proxy and it'll "just work".
If the proxy was not a proxy, but a real method, then you really,
*really*, would not want to to message super's super. The whole
point of super's overriding the method is to provide custom
functionality that very likely may completely override or extend the
behavior of super's super's implementation.
If you subsequently bypass super's implementation, you are (a)
breaking encapsulation and (b) asking for a world of hurt come
debugging/support time.
In general, if you have a class design that requires direct
invocation of a particular classes instance method to bypass any
overrides, then there is something horribly wrong in the design of
the classes!
b.bum
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