Re: Private ivars, not marked as IBOutlet, visible in IB
Re: Private ivars, not marked as IBOutlet, visible in IB
- Subject: Re: Private ivars, not marked as IBOutlet, visible in IB
- From: Greg Parker <email@hidden>
- Date: Mon, 15 Mar 2010 15:53:47 -0700
On Mar 15, 2010, at 3:35 PM, David Duncan wrote:
> On Mar 15, 2010, at 3:22 PM, Jeff Laing wrote:
>> As I recall, sending variables of type id<YourProtocol> useful messages like retain and release generate a compiler warning, whereas NSObject<YourProtocol> are fine.
>>
>> I could be wrong on this, but I definitely recall thinking it was a stupid compiler behavior.
>
> This is because you didn't declare your protocol as extending the NSObject protocol. If you do something like this:
>
> @protocol MyProtocol<NSObject>
>
> Then you can call all the NSObject stuff without warning.
Well, some of the NSObject stuff. NSObject protocol is a subset of NSObject class.
If you only use the basics - like retain/release/autorelease, respondsToSelector:, performSelector - then NSObject protocol is sufficient. Other more recent additions are part of NSObject class only.
--
Greg Parker email@hidden Runtime Wrangler
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| References: | |
| | >Re: Private ivars, not marked as IBOutlet, visible in IB (From: Lynn Barton <email@hidden>) |
| | >Re: Private ivars, not marked as IBOutlet, visible in IB (From: Joanna Carter <email@hidden>) |
| | >Re: Private ivars, not marked as IBOutlet, visible in IB (From: Thomas Engelmeier <email@hidden>) |
| | >Re: Private ivars, not marked as IBOutlet, visible in IB (From: Joanna Carter <email@hidden>) |
| | >Re: Private ivars, not marked as IBOutlet, visible in IB (From: Alexander Spohr <email@hidden>) |
| | >Re: Private ivars, not marked as IBOutlet, visible in IB (From: Roland King <email@hidden>) |
| | >Re: Private ivars, not marked as IBOutlet, visible in IB (From: Joanna Carter <email@hidden>) |
| | >Re: Private ivars, not marked as IBOutlet, visible in IB (From: Alexander Spohr <email@hidden>) |
| | >Re: Private ivars, not marked as IBOutlet, visible in IB (From: Kevin Cathey <email@hidden>) |
| | >RE: Private ivars, not marked as IBOutlet, visible in IB (From: Jeff Laing <email@hidden>) |
| | >Re: Private ivars, not marked as IBOutlet, visible in IB (From: David Duncan <email@hidden>) |