Re: Categories and Compiler Warnings
Re: Categories and Compiler Warnings
- Subject: Re: Categories and Compiler Warnings
- From: Daniel Todd Currie <email@hidden>
- Date: Fri, 28 May 2004 23:11:01 -0700
Yep, I just needed to put the interface first. This all makes sense,
just a brain fart on my part. Thanks to all who replied.
-- D
On 2004 May 28, at 07:15, matt neuburg wrote:
On Thu, 27 May 2004 23:29:32 -0700, Daniel Todd Currie <email@hidden>
said:
I have added a private category of MyClass to MyClass's .m file, like
so:
@implementation MyClass
[...]
@end
@interface MyClass (Private)
- (void)myPrivateMethod;
@end
@implementation MyClass (Private)
- (void) myPrivateMethod {
[...]
}
@end
The problem is that whenever I call myPrivateMethod from the
public/primary MyClass implementation, I get one of those annoying
"may
not respond to" compiler warnings. What is the point of even having
an
interface if I still get warnings?
The problem is that the implementations are backwards. If it's all in
one
file like this, make either the implementation for MyClass (Private)
or the
interface for MyClass (Private) precede the implementation for MyClass
(Public). You do not need the interface for MyClass (Private) at all
in the
former case, by the way.
This is for exactly the same reason that an undeclared method must
precede a
call to that method in the same file. A file has a linear order so
things
must appear in that order. Objective-C is C. m.
--
matt neuburg, phd = email@hidden, http://www.tidbits.com/matt/
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