Mastering Swift 2 Programming (Video 48)

This video tutorial explores the performance differences between reference types and value types in Swift. It begins with a recap of previous discussions on memory management and sets up a test environment in Xcode. The tutorial guides viewers through creating a class and struct, running tests, and analyzing the results. It highlights the significant performance differences and demonstrates how whole module optimization can further enhance performance. The video concludes by emphasizing the importance of mindful programming choices for optimized code.

Explain the significance of the test results comparing class operations and struct operations.

What impact does mutability have on performance in Swift according to the video?