The next Philly CocoaHeads meeting will be Thursday, February 9th 7-9pm at Indy Hall. Post-meeting drinks commence afterwords; National Mechanics is our usual hangout.

You’ll need to use the intercom to get in (#022). If you are having any trouble feel free to call MikeZ’s cell (267-563-0616) and we’ll be sure to get you in.

We usually all chip in and order some pizza and refreshments, so if you can bring a few bucks for that please do.

Meeting Agenda

Group Business

• Assistant wanted for keeping meeting notes, spell checking, marketing help.

Show and Tell

In addition to being an open mic to demo new apps or code, Show and Tell also invites people to bring problems or design issues they are encountering in current projects for feedback.

Planned Show and Tell:

• Anthony Coombs, looking for feedback on a new project.

Talks

Introduction to Objective-C categories and key/value coding by Michael Raber

Michael has come to love some of the cool features of Objective-C that you might not discover while learning iOS and Mac programming. Categories can be used to add methods to classes without subclassing and key/value coding can be used to set and retrieve property values.

Michael will introduce the topics and show some example use cases. If you have used categories please post your favorites to share here:

https://gist.github.com/1761047

UIViewController Containment by Matt Thomas

Matt will be doing a talk on UIViewController Containment covering:

• The basic concept behind the “View Controller Pattern” and the difference between “content” and “container” view controllers.
• How iOS 5 formalized the concept of a container view controller.
• The odd dual hierarchies between “View Hierarchies” and “View Controller Hierarchies”.
• Apple’s built-in container controller.
• Why you would want to implement your own container view controller
• How to implement your own container view controller, tips, and pitfalls

About CocoaHeads

PhillyCocoa is a Philadelphia area Mac and iPhone programming group, a chapter of the worldwide CocoaHeads. All skill levels are welcome. The only requirement is an interest in Apple-related technologies and moderate tolerance for geeking out.

We hold our CocoaHeads group meetings on the second Thursday of every month at Indy Hall. A calendar feed can be found on the PhillyCocoa website.

We are always looking for feedback and suggestions on what topics to discuss at our meetings. We have a public writeroom (password is “password”) where we try to keep tabs on what people are interested in hearing about. Feel free to append your own ideas, especially if you are interested in speaking.

Group website: http://phillycocoa.org

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