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Re: How to use a class, which may not be available
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Re: How to use a class, which may not be available


  • Subject: Re: How to use a class, which may not be available
  • From: m <email@hidden>
  • Date: Thu, 29 Jan 2004 17:27:20 -0600

On Jan 29, 2004, at 3:47 AM, j o a r wrote:

This is a FAQ, and has been covered several times on this and other
lists. Read the documentation that Apple has published on the topic,
and don't forget the list archives!

I've been trying to find info in the archives on exactly this subject. The problem is, if you barely know anything about it, it's difficult to come up with a search query that turns up anything useful. I have found apple's tn 2064 (http://developer.apple.com/technotes/tn2002/tn2064.html) which is pretty good on the principles of what needs to be done, but very light on the mechanics. That's where I'm hung up. An example or recipe would be good.

How about a hint as to what we should be searching the archives for?

_murat

On 2004-01-29, at 10.33, Stefan Pantke wrote:

Since never occurred previously, soma advice is needed.

If I would like to use

NSSortDescriptor

which is availbale on 10.3 as base of some new class , but not before,
how do I have to code, such that my code will not crash.

In a 10.2 environment, the respective part of code - which uses the
SortDescriptor -
will not be called. Thus, no problem regarding message dispatching
should
occur. Since some 10.3 callback will not be called in 10.2.

But how about linking? Will the app crash due to unresolved symbols?
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  • Follow-Ups:
    • Re: How to use a class, which may not be available
      • From: Alastair Houghton <email@hidden>
    • Re: How to use a class, which may not be available
      • From: Sherm Pendley <email@hidden>
References: 
 >How to use a class, which may not be available (From: Stefan Pantke <email@hidden>)
 >Re: How to use a class, which may not be available (From: j o a r <email@hidden>)

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