Summary

This chapter demonstrated all the fundamental aspects of behavioral design patterns and how to efficiently utilize them in practice. Those patterns focus on the communication connections among objects and how they perform them without introducing unnecessary complexity in the process.

You started by practicing the basics of the Strategy pattern for developing interchangeable algorithms. Then you discovered the details of the Chain of Responsibility pattern and how to create middleware that processes a request through multiple handlers. You also explored how the Command pattern uses standalone objects that contain all the information about a particular request. Using the Iterator pattern, you learned how to access a traversable structure in a way that does not expose its internal details. Next, you explored how the Mediator pattern can simplify the direct communication between objects. After that, you understood the core principles of the Memento pattern for storing and...