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Re: private methods and variables
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Re: private methods and variables


  • Subject: Re: private methods and variables
  • From: Ken Thomases <email@hidden>
  • Date: Tue, 29 Jul 2008 18:19:37 -0500

On Jul 29, 2008, at 4:02 PM, Torsten Curdt wrote:

This question is NOT about private APIs from Apple but more about how to organize structure my own code.

Especially for a framework I don't want to expose implementation details to the interface.
So while I found the suggestion to use a special category like:


@interface MyClass
-(void) publicMethod;
@end

@interface MyClass (Private)
{
	int privateVariable;

This is an instance variable. There's one per instance.



} -(void) privateMethod; @end

I am not sure why that would be better than to just do

@interface MyClass
-(void) publicMethod;
@end

@implementation MyClass

int privateVariable;

There is only one of these across the entire program. It's not an instance variable. It's as close as Objective-C gets to what would be a "class variable" in another language. (Although it should probably be declared "static" to limit its linkage to this translation unit.)



-(void) privateMethod { }

-(void) publicMethod {
}

@end

Cheers, Ken

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