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Re: Implementing delegates with formal protocols

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Re: Implementing delegates with formal protocols

Subject: Re: Implementing delegates with formal protocols
From: Corbin Dunn <email@hidden>
Date: Fri, 28 Aug 2009 15:02:13 -0700


On Aug 28, 2009, at 2:57 PM, Rick Mann wrote:

Thanks for the suggestions. I have one suggestion saying to extend my protocol to conform to NSObject, and another saying I should use NSObject instead of ID.

Is one approach better than the other?

Yes; David's suggestion is preferred. It is what we did in AppKit for SnowLeopard, ie:

@protocol NSControlTextEditingDelegate <NSObject>

The main reason is so controls can store a reference and do a - respondsToSelector: on @optional methods.

corbin


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Follow-Ups:

Re: Implementing delegates with formal protocols
From: tyler <email@hidden>
Re: Implementing delegates with formal protocols
From: Rick Mann <email@hidden>


References:  
  >Implementing delegates with formal protocols (From: Rick Mann <email@hidden>)
  >Re: Implementing delegates with formal protocols (From: David Duncan <email@hidden>)
  >Re: Implementing delegates with formal protocols (From: Rick Mann <email@hidden>)




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