Introducing the Iterator design pattern

The Iterator design pattern is a behavioral pattern that provides a way to iterate through the elements of a collection one by one without paying attention to the details of the collection. This pattern promotes encapsulation and allows the internal structure of the collection to be changed without affecting the client code. For example, if the collection structure is changed from an array to a list, the client codes will not change.

Introducing the Memento design pattern

The Memento design pattern is a behavioral pattern that allows an object to save its previous state so that it can easily return to that state later. This pattern is useful when you want to restore an object to a previous state or when you need to undo a series of actions.

Introducing the State design pattern

The State design pattern is a behavioral pattern that allows an object to change its behavior as needed. This pattern helps to separate the behavior of an object from its state and provides a possibility to switch between different states dynamically.

Introducing the Strategy design pattern

The Strategy design pattern is a behavioral design pattern that allows defining a set of methods that can be replaced at runtime.

Introducing the Template Method design pattern

The Template Method pattern is a behavioral design pattern that defines the skeleton of an algorithm in a abstract base class and allows subclasses to implement specific steps of the algorithm without changing its overall structure. This pattern is useful when multiple classes have similar operations but with different implementations.

Introducing the Observer design pattern

The Observer design pattern is a behavioral design pattern that connects an object to several dependent classes. This pattern provides the possibility that when the state of an object changes, its dependent objects are automatically notified and updated.

Introducing the Visitor design pattern

Visitor design pattern is a behavioral design pattern that allows you to separate object behavior from object structure. This pattern is useful when you have a complex object structure and want to add new operations to it without changing the objects themselves.

Introducing the Command design pattern

The Command design pattern is a behavioral design pattern that encapsulates a request as an object and separates the sender of the request from the receiver of the request.

Introducing the Interpreter design pattern

The Interpreter design pattern is a behavioral design pattern that provides a way to interpret sentences or phrases in a defined language.

Introducing the Mediator design pattern

The Mediator design pattern is a behavioral design pattern that enables loose coupling between different components by providing a central communication container.