python design patterns book

; } public void Sethead (String head) { this.head = head; } Public String GetBody () { return body; } public void Setbody (String body) { this.body = body; } Public String Getfoot () { return foot; } public void Setfoot (String foot) { this.foot = foot; } } [Java]View PlainCopy print? Public class manbuilder{ Mans Man; Public Manbuilder () { man = New Man (); } public void Buildbody () { Man.setbody ("building a man's body"); }

It is very important to learn the design model. We are all very clear about this. Now I want to talk about some of my views on the design model. The word "Mode" has many explanations. "Model", explained in the ancient book "Shuo Wen": "model, method also.Press, water, wood, earth, gold, and bamboo.";" Style "means" demonstration, role model ". It can be seen th

In the book "Java and Patterns" of Dr. Shanhong, this describes the template method pattern:　　The template method pattern is the behavior pattern of the class. Prepare an abstract class, implement some of the logic in the form of concrete methods and concrete constructors, and then declare some abstract methods to force subclasses to implement the remaining logic. Different subclasses can implement these ab

I have read head first design patterns today, but I have a lot of feelings. First, I have a sense of accomplishment when I finish reading this book in the first English version. I can't think of the old blind English. Now I can read the original version. Second, I read this book during the winter vacation. This is al

Common php design patterns factory models Many design patterns encourage loose coupling in the design patterns book. To understand this concept, we 'd better talk about the hard work of

The Observer PatternThe Observer is a design pattern where an object (known as a subject) maintains a list of objects depending on it (observe RS), automatically notifying them of any changes to the state.When a subject needs to notify observers on something interesting happening, it broadcasts a notification to the Observ ERS (which can include specific data related to the topic of the notification).When we do longer wish for a particular observer to

I have read the Bridge Mode in section 4.2, I found that this mode is actually used in my two articles, "interface and implementation separation technology in C ++" and "re-reading the" design mode "Study Notes (2) -- A design method discussed in the separation of interfaces and implementations. The following are the advantages of this mode described in the book:

An essential step for object-oriented design is "instantiation". If instantiation is closely integrated with specific implementations ...... There is no problem with simple creation. However, if we do not create a simple one, we need to change the specific algorithm and extend the type of the algorithm, the system needs to run after the change! Then, the problem will become complex and changeable! In several desig