Re: Calling original method implementation from category
Re: Calling original method implementation from category
- Subject: Re: Calling original method implementation from category
- From: Georg Tuparev <email@hidden>
- Date: Mon, 25 Apr 2005 14:55:05 +0200
On Apr 25, 2005, at 2:14 PM, Stephane Sudre wrote:
On page 70 in the ObjC PDF you can, among other things, read that
that:
"The methods added in a category can be used to extend the
functionality of the class or override methods the class inherits. A
category can also override methods declared in the class interface.
However, it cannot reliably override methods declared in another
category of the same class."
And what they warn about is that the loading order of categories is
not defined / difficult to predict, so if you have several categories
defining / overriding the same method, it will be difficult /
impossible to know which one that is going to be used.
Ok, so you can do it but it's a good idea to avoid doing it and it
won't work in every case.
Wrong. You can override, and it is very good idea indeed.
What they do not recommend is to override the same method in two or
more categories. These are two very different cases!
Georg Tuparev
Tuparev Technologies
Klipper 13
1186 VR Amstelveen
The Netherlands
Mobile: +31-6-55798196
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