A pair of design patterns
basic concepts
Design mode species and classification
How to create, combine representations
THE Simple Factory
The factory method
The Abstract Factory Pattern
The Singleton Pattern
The Builder Pattern
The Prototype Pattern
How to combine a larger structure
The Adapter Pattern
The Bridge Pattern
The Composite Pattern
The Decorator Patter
The façade pattern
The Flyweight Pattern
The Proxy Pattern
The allocation of the algorithm and inter-object responsibilities not only describe objects or classes, but also describes communication methods
Chain of Responsibility
THE Command Pattern
The Interpreter Pattern
The iterator patter
The Mediator Pattern
The Memento Pattern
The Observer Pattern
The State Pattern
THE Strategy Pattern
THE TEMPLATE METHOD PATTERN
The Visitor Pattern
l Main implementation method Abstract, inherit, gathered
l For system designers, help mutual understanding and improve design level; familiar with Case tools, understand some concepts in .NET;
l Relationship between reconstruction and design patterns
l
2 The corresponding issues in the development of the development
l No abstract class
l No inheritance
For example, passenger class and employee
Basic definition and language implementation of three UML maps
The writing of class diagrams, inherits, indicates that the representation of the combination, the representation of each other; examples P.242 /
Four Visitor as an example, explore how to learn design patterns
l The role: acting on each element operation in an object structure, defining a new operation without changing the class, separating the actual operation with the object itself;
l Interface:
l code implementation:
The class itself does not need to know what needs to be implemented. It is determined by calling, adding a Visitor subclass. When the call is called, change ELEMENT's processing method by changing the type of Vistor as this new subclass, not Need to change the operation of the Element itself, the operation result is reflected by Visitor. .NET example, EMP / BOSS
l How to write if you press us?
