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NSAllowsNullArgument undefined?

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NSAllowsNullArgument undefined?

Subject: NSAllowsNullArgument undefined?
From: SA Dev <email@hidden>
Date: Tue, 11 Oct 2005 08:59:09 -0400

List:

I'm trying to create an options dictionary for manual bindings. I want to enable null arguments. According to the bindings reference for many controls, "NSAllowsNullArgument" can be an NSNumber with a bool value.

  Unfortunately, the compiler croaks at the following line:

NSDictionary * bindOpts = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:YES], NSAllowsNullArgument, nil];

  The error is as follows:

error: 'NSAllowsNullArgument' undeclared (first use in this function)

How am I supposed to use this constant? Is there a header I must include? Where is this documented?

Thanks,

 - SADev


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