Summary
Behavioral patterns work with algorithms in ways that keep your software manageable. In this chapter, we looked at four very useful and popular patterns that can be employed to solve a variety of design problems.
The Command pattern can be used to isolate instructions from the objects responsible for executing them. This is one of the most common causes of the antipatterns we discussed in Chapter 1, There’s a Big Ball of Mud on Your Plate of Spaghetti. Tightly coupling logic with concrete structures yields software that is brittle and prone to grow in complexity. The Command pattern will help you avoid this trap.
The Iterator pattern is used any time you need to iterate over a collection in some manner not handled by the standard .NET iterator. This pattern works with a collection and starts with the first item before iterating in a straight line to the last. This can take the form of manipulating the collection before processing, or it might be a novel way of...
