macd patterns

Java design patterns ------- factory patterns Java design patterns -------- factory patterns Classification and Definition 1) Simple Factory: Also known as the Static Factory Method mode, which belongs to the class creation mode. In simple factory mode, instances of different classes can be returned based on di

[Summary of design patterns] Some Thoughts on common design patterns (To be continued ...), Design Pattern not complete to be continued Preface In the [Java design patterns] series, LZ wrote more than a dozen articles on design patterns, roughly about the role, writing, advantages and disadvantages, and application sce

JAVA design patterns-learning Summary (sequence), java Design Patterns Design ModeDesign pattern is a summary of the code Design experience that has been used repeatedly. The design pattern is used to make code reusable, make it easier for others to understand, and ensure code reliability. There are 23 common design patterns. There are three categories:Creation

Original: Http://www.tuicool.com/articles/6JBN7z3 If you are not yet aware of template method patterns and policy patterns, read the policy mode (strategy) and template method patterns first. The main idea of the template method pattern is to define an algorithm flow, implement the specific steps, and defer to subclasses. This allows specific steps in a "custom

be dependent? What is the difference between reference and dependency?This is a good question! In some cases, a class retains the reference of another class, but this class does not call the method of another class, but exposes the reference of another class for external calls.For example, if Class1 has a certain attribute Class2, you can access this attribute to obtain the instance of Class2:Class1 = new Class1 ();Class2 = class1.Class2;Although Class1 references Class2, it does not call the C

developers, never care about these behaviors. The code is as follows:JavaScript var address = (function// address module function(obj) { Address.refresh (obj); }); return { function(avatar) { console.log (' Refresh receipt address List ');} } ;}) ();Advantages and Disadvantages Supports simple broadcast communication and automatically notifies all subscribed objects; After page loading publishers can easily have a dynamic association wi

23 design patterns (21) java meta-mode and 23 Design Patterns Dr. Yan Hong's book "JAVA and patterns" describes the Flyweight mode as follows: In boxing, Flyweight refers to the most lightweight model, that is, "Fly magnitude" or "rainfall level". Here we use the free translation of "Enjoy yuan mode", because it can better reflect the intention of the model. The

Python design patterns, python Design Patterns This article describes common python design patterns. We will share this with you for your reference. The details are as follows: ##! /Usr/bin/env python ###-*-coding: UTF-8 ## class HttpBase: # def get (self): # psss # class Http1 (HttpBase ): # def get (self): # print 'http1' # class Http2 (HttpBase): # def get (se

This article mainly introduces PHP object-oriented visitor patterns and the combination of patterns, interested in the reference of friends, I hope to help you. Because the code example that continues the composition pattern in the original text is about the visitor pattern, it is merged here to review. But it's mostly about visitor patterns. As the name implies

This article references:: Geekband classroom content, Instructor: Li Jianzhong: Network information: http://blog.csdn.net/hguisu/article/details/7556625This article only as own study note, does not represent the authority, because is the beginner, has the mistake to please everybody correct, thanks.1, what is the Observer mode, where are the application sites?The Observer pattern (sometimes called the publish-subscribe subscribe> mode, model-view view> mode, source-listener listener> mode, or sl

change.Beverage.prototype.customerWantsCondiments =function(){ return true;//seasoning is required by default }; Beverage.prototype.init=function(){ this. Boilwater (); this. Brew (); this. Pourincup (); if( this. customerwantscondiments ()) {//If the hook returns true, the seasoning is required this. Addcondiments (); } };Do you really need to "inherit"?The template method pattern is one of the few inheritance-based design

mode:Loosely coupled　　The façade mode is loosely coupled between the client and subsystem, allowing the modules inside the subsystem to be more easily extended and Maintained.　　Simple to use　　The façade mode makes the subsystem more easy to use, the client no longer needs to understand the implementation within the subsystem, and does not need to interact with the modules inside the many subsystems, just interact with the façade class.　　Better partitioning of access levels　　By using facade wise

without modifying the existing code. The difference between using wrapper mode and using inheritance: Using wrapper mode to dynamically add behavior, using inheritance is static and is determined at compile time. Assuming that the inheritance pattern is used, you must write a special class for each possible combination of behaviors, that is, the kind of behavior that your code can represent is determined by the class you are designing, and the customer cannot get a combination of

The factory method pattern and the abstract factory pattern in the design pattern have been unknowingly used in the programming, but often only practice did not carry out theoretical guidance, so feel that there is a 1:30 path to the monk without the system to learn the feeling of not practical. Now summarizes the abstract factory patterns used in the previous project to enhance understanding of the factory pattern in the Create mode. Let's start with

Created by Guo Chai April 16, 2015 21:50:33Eyes a little pain, eyesight is also in rapid decline, the window of the soul, pay attention to protection!================================================Coupling is a measure of a program written by the standard of good or bad?Coupling is an indicator of the degree of correlation between modules and modules"High cohesion, low coupling" is the object-oriented programming of core ⼼ mind;================The idea of design

Simple Design Mode Introduction Gof (Gang of Four, which refers to Erich Gamma, Richard Helm, Ralph Johnson John vlissides)'s design patterns (published in 1995) this is the first time that we have elevated the design pattern to a theoretical level and standardized it. This book proposes 23 basic design patterns. Since then, a large number of new design patterns