python design patterns book

code is as follows: The code for Mutequack is as follows: So now you just need to test to see the final result: end note:In fact, most of the content belongs to the transport, the original very few, but also deleted the original book part of the content, will slowly more practical understanding to explain a pattern, the first test of water, code is not all the small partners to write their own, do not Baidu, code this thing, although the wheel has be

Please read the previous article first Refactoring Even the most thoughtful and skilled programmers cannot foresee any nuance in a software project. The problem is always unexpected, the demand may be changing, and the result is that the code is optimized, shared, and replaced. Refactoring is a common approach: check all your code to find the similarities and the similarities in which you can unify and simplify, making your code easier to maintain and extend. Refactoring also involves exploring

the book to implement the two patterns is completely different (I think this implementation is somewhat arbitrary). the state mode, in particular, uses a separate implementation hierarchy, but I don't think it's necessary unless you assume that the implementation code is not controlled by you (which is, of course, a possibility, but if the code is controlled by you, It is also more concise and practical wi

This "Zen of design patterns" was not easy to get. At that time, I had the honor to ask Qin Xiaobo in the csdn forum. Reading such a classic book cannot be like reading a novel. It is intended to be a pleasure to go around for a long time. It is more about reading and changing questions. Why should we ask every key point. Teacher Qin Xiaobo's language is sometime

=function () { the // ... - } - This. SetName =function () { - // ... + } - This. Setprice =function () { + // ... A } at //Object Public Properties - This. ID =ID - //Object Public Method - This. Copy =function () { - // ... - } in -}In OOP, there are two concepts: static properties and Static methods, both of which belong to the class, and not each object, the invocation can only be used by the class name plus point syntax, then how to implement JS?In

Group Creation Intention I was reading refactoring to patterns during the Qingming Festival holiday in April 6, 2013. The book mentioned that Joshua kerievsky created the "New York City Design Patterns Learning Group" in New York as early as 1995 ", study a design pattern t

GoF (Gang of four, foursome, "design patterns:elements of reusable object-oriented Software"/"Designing Mode" a book of Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides, does not refer to MVC as a design pattern, but rather as a set of classes for building user interfaces. in their view, it is actually the evolution of the other three classic

: Http://book.cnblogs.com/zt/DesignPatterns/ Then select related topics. -Purpose This is an example of the book "design patterns-engineering implementation and expansion based on C #" for readers to refer to and learn when reading books. Ii. Content Contains all examples of this bookSource code Sample source in this bookCodeSave by chapter, includin

Chapter 4 test-driven development practices "By carefully analyzing the three steps for enterprises to run the value chain, I think it is very familiar with the test-driven development value chain of software development. The first step is to discover the value and apply it to test-driven development, that is, test first. Test-driven writingCode. The second step is production value, which is beyond doubt a stage of code writing. The third step is to reap the value. In test-driven development,

In the book "Java and Patterns" of Dr. Shanhong, this describes the factory method pattern:The factory method pattern is the creation mode of the class, also known as the virtual Constructor mode or the Polymorphism factory (polymorphic Factory) pattern.The factory method pattern is intended to define a factory interface that creates product objects, deferring actual creation to subclasses.Then the factory

In the book "Java and Patterns" of Dr. Shanhong, this describes the adapter (Adapter) Pattern:The adapter mode transforms the interface of one class into another interface that the client expects, so that two classes that would otherwise not work together because of an interface mismatch can work together. purpose of Adapter mode　　Using electrical appliances As an example, the laptop plug is generally

Single case is the game development of the more common design patterns, although the function is different, but some features are common, code is also a lot, if you can put in a base class inside is best, but the singleton need to have a instance function to return the current object, so this function must be static, There is no way to directly inherit, the previous read "Object-oriented game development" T

In the book "Java and Patterns" of Dr. Shanhong, this describes the singleton pattern:　　As an object's creation mode, Singleton mode ensures that a class has only one instance, and instantiates itself and provides this instance to the system as a whole. This class is called a singleton class. Structure of the Singleton patternthe characteristics of the singleton mode: A singleton class can ha

Observer patterns for Android's common design patternsThe observer design pattern is often used in Android applications, and the pattern principle is similar to this scenario:Users to book newspapers, and then in the newspaper register, the newspaper to statistics users (add users), users can also cancel the subscripti

In the past few days, we have become increasingly aware of the importance of java basics. I feel that many basic things have not been learned well. So we started the system learning of the design model. I always think that the essence of a pattern is a method. But here is a professional word. I recommend a book "learning design

Introduced Mediator mode (mediator), which encapsulates a series of object interactions with a mediation object. Intermediaries do not need to refer explicitly to each other, so that they are loosely coupled and can independently alter their interactions. Main content from: http://www.addyosmani.com/resources/essentialjsdesignpatterns/book/ Body In software development, an intermediary is a behavioral design