TOUNA’s Blog – In memory of Turner

Behavioral patterns are those patterns that are most specifically
concerned with communication between objects. In this chapter, we’ll see
that:
· The Observer pattern defines the way a number of classes can be notified
of a change,
· The Mediator defines how communication between classes can be
simplified by using another class to keep all classes from having to know
about each other.
· The Chain of Responsibility allows an even further decoupling between
classes, by passing a request between classes until it is recognized.
· The Template pattern provides an abstract definition of an algorithm, and
· The Interpreter provides a definition of how to include language elements
in a program.
· The Strategy pattern encapsulates an algorithm inside a class,
· The Visitor pattern adds function to a class,
· The State pattern provides a memory for a class’s instance variables.
· The Command pattern provides a simple way to separate execution of a
command from the interface environment that produced it, and
· The Iterator pattern formalizes the way we move through a list of data
within a class.