There are 3 ways to add ivars to a class. The traditional way:
@interface Foo {
id _bar;
}
And 2 new ways:
@interface Foo() { // Class extension, note the ()
id _baz;
}
@implementation Foo { // Implementation block.
id _faz;
}
> On Jun 3, 2015, at 7:32 AM, Alex Zavatone <[email protected]> wrote:
>
> Maybe I should have included the text above it.
>
> "It's also possible to use a class extension to add custom instance
> variables. These are declared inside braces in the class extension interface."
>
> So, I don't know how you see that it goes in the @implementation block since
> the code I pasted and the line above it say it goes in the @interface.
>
> Page 73 of
> https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ProgrammingWithObjectiveC/ProgrammingWithObjectiveC.pdf
>
> On Jun 3, 2015, at 10:22 AM, Mark Wright wrote:
>
>> That’s a ‘Class Extension’. Furthermore, it’s under the title "Class
>> Extensions Extend the Internal Implementation”. It also mentions that it
>> goes in the @implementation block…
>>
>>
>>
>>
>>> On 03 Jun 2015, at 15:11, Alex Zavatone <[email protected]> wrote:
>>>
>>> Apple's Programming with Objective-C reference document © 2014
>>>
>>> https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ProgrammingWithObjectiveC/ProgrammingWithObjectiveC.pdf
>>>
>>>
>>> Page 73
>>>
>>> @interface XYZPerson () {
>>> id _someCustomInstanceVariable;
>>> }
>>> ...
>>> @end
>>>
>>> Uhhhhhh.
>>>
>>> Doesn't this violate Clang's own mention that "declaration of instance
>>> variables in the interface is deprecated" in Apple's own recommendations
>>> and documentation?
>>> _______________________________________________
>>>
>>> Cocoa-dev mailing list ([email protected])
>>>
>>> Please do not post admin requests or moderator comments to the list.
>>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>>>
>>> Help/Unsubscribe/Update your Subscription:
>>> https://lists.apple.com/mailman/options/cocoa-dev/blue.buconero%40virgin.net
>>>
>>> This email sent to [email protected]
>>
>
> _______________________________________________
>
> Cocoa-dev mailing list ([email protected])
>
> Please do not post admin requests or moderator comments to the list.
> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>
> Help/Unsubscribe/Update your Subscription:
> https://lists.apple.com/mailman/options/cocoa-dev/david.duncan%40apple.com
>
> This email sent to [email protected]
--
David Duncan
_______________________________________________
Cocoa-dev mailing list ([email protected])
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com
This email sent to [email protected]
