Design Pattern Learning 1-Concept

 

Concept

The Pattern provides a solution, which is a design method rather than a programming technology. There are two main functions:

L reduced Coupling

L increased flexibility

 

Classification of design patterns

In fact, the number of models is not important. What is important is the role of those models on our actual application.

There are three main modes:

L Creation Mode: Create an object,

Mainly include:

N factory, builder, Singleton

L combination mode: Combination object

Mainly include:

N adapter, decorator

N flyweight, proxy

L behavior mode:

Mainly include:

N state, memento

N observer, stratepy, visitor