Source code from my Skill Sprint session on Objective-C

The nice folks at Embarcadero asked me to do a guest lecture for their series of “Developer Skill Sprints.” During this afternoon’s live session, someone asked for the source code for the example. Here it is:

If you haven’t seen the Skill Sprint series yet, head over to and sign up to attend these free sessions.

Finally, we’ll be running one more “live” session on the subject tonight at 5pm Pacific. If you’d like to attend a class with “Professor” Jacob, here’s your chance! Register to attend at the URL above.

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For programmers, by a programmer

Hi. My name is Jacob, and I'm the creator of Castalia.

I starting programming in 1986, learning Lightspeed Pascal on a Mac Classic. Today, I'm a professional programmer, teacher, and entrepreneur.

I have a Master's Degree in Computer Science, and I still love Pascal and Delphi.

I believe that writing code is the heart and soul of software development, and I love helping programmers write code more effectively.