Re: question about informal protocols
Re: question about informal protocols
- Subject: Re: question about informal protocols
- From: David Duncan <email@hidden>
- Date: Fri, 20 Nov 2009 12:19:09 -0800
On Nov 20, 2009, at 12:09 PM, Michael de Haan wrote:
> Did not see that it was deprecated, but will take your lead and convert them to that. Does the, in your opinion, "optional" addition pretty much replace categories as a whole, or is there still a role for them?
The addition of @optional and @required to Protocols is meant to replace the need for Informal Protocols. Categories are still very useful for adding functionality to a class, as Protocols only allow you to create an interface, not an implementation.
--
David Duncan
Apple DTS Animation and Printing
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