Randall questions

• How to execute two UI updates concurrently?
• How to synchronize tasks in different dispatch queues?
• How to make properties private?
• How to take a screenshot of a view and email it?
• Typically, how much does it increase development time to target both iPhone and iPad?
• Adding Unit Tests to an already existing project?
• How to stop the execution of tasks in a dispatch queue?

Randall answers