Mastering Swift 2 Programming (Video 21)

This video tutorial addresses memory leaks in applications by explaining how to identify and fix them using weak and unowned references. It covers strong reference cycles, practical applications, and testing for memory leaks. The tutorial also delves into managing memory in closures, emphasizing the importance of using weak and unowned references to prevent circular references and memory leaks.

Describe the difference between 'weak' and 'unowned' references.

How can closures lead to memory leaks, and what can be done to prevent this?