Php design patterns ------- (1) policy patterns, design patterns -------
I. Why do I need to learn design patterns.
My last project was an App interface. Due to the tight schedule, my boss was in a hurry. So at the end of the project, I found that tens of thousands of lines of code had been written, it can be imagined
of the simplest Factory modes. assume there is a set of objects ConcreteObjectA and ConcreteObjectB. Factory is responsible for Object Instantiation, class diagram:The code is implemented as follows:
class AbstractObject {};class ConcreteObjectA : public AbstractObject {};class ConcreteObjectB : public AbstractObject {};class ConcreteObjectNULL : public AbstractObject {}; class Factory {public: AbstractObject* create_object(const string type) { if (type == "A") { r
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Combination ModeMmBirthday present
Combination ModeUse Cases:
MM has a birthday today. Said to Gg, "Today's my birthday, you want to give me a big gift:-o", "Well, okay, go to the store and pick it for yourself ." "This T-shirt is very beautiful. It's nice to add this dress. That's it. A set of gifts .", "Can you add anything in the pack
23 design patterns (22) java state patterns, 23 Design Patterns
I. Overview
When an object in the system has multiple states, these States can be converted, and the state mode can be used for different states of the object. The State mode separates the state of an object from the object and encapsulates it into a special State class, so that the state of the obje
Php design patterns-Abstract Factory patterns, design patterns Factory
Before learning this chapter, read the simple factory mode and factory method mode.
Under what circumstances should the abstract factory model be used:1. A system should not depend on the details of how product instances are created, combined, and expressed. This is important for all factory m
experience reach a certain level, and it also means to summarize a lot of good design experience, however, it may not be the case that "no teacher can do anything", or you can say that, on the basis of level and experience, it is time for the system to learn the "mode, it is helpful to learn the experts' summary and verify your own shortcomings.
This series of design patterns learning notes is actually a Learning Record for the book "Java and
Design Patterns-factory patterns and abstract factory patterns
Factory mode: Define an interface for creating an object, but let subclasses decide which class to instantiate. factory method lets a class defer instantiation to subclass. defines an interface used to create objects so that the subclass decides which class to instantiate. The factory method delays th
Learning JavaScript design patterns: iterator patterns and javascript Design Patterns
The iterator mode provides a method to access each element of an aggregate object sequentially without exposing the internal representation of the object.
Array. prototype. forEach in JavaScript
1. iterator in jQuery
$. Each ([1, 2, 3], function (I, n) {console. log ("Curre
These days our Java learning about several important design patterns of the relevant content, so write your own on the policy model, intermediary mode and template Method model understanding
A policy model
The policy pattern is simply the encapsulation of a set of algorithms that can implement the different functions of the program requirements, they can be replaced by each other, and the policy pattern makes the algorithm independent of the customer
use document. creatElement instead, try not to use commit E. write.
Design Pattern category
Creation Design Mode
The creation design mode focuses on the object creation mechanism and creates objects in a way suitable for a given situation. Attributes of this category include:
Constructor, Factory, Abstract, Prototype, Singleton, and Builder
Structural Design Mode
The structure pattern is related to the object combination. It can be used to find a simple method to establish a relationship betwee
Preface
"Zen of design patterns" saw 78th pages. Continue to stick to it! As a creation-type design model, the factory method model is frequently used. Therefore, the learning of this model is quite valuable. So what is the definition of this mode? What is the implementation of this mode? What is the role of this model? I will do everything possible for readers to explain clearly. Of course, if not, I can discuss it together. This kind of learning is
a well-written and concise article. Transferred from: http://dev.yesky.com/378/2012378.shtml
Because [GOF95] is the first of a book on software patterns and is one of the most popular books in oo design theory, some people often use the term design pattern to refer to any type of schema, design, or program implementation that directly deals with software. Others emphasize the partitioning of three different levels of
Why do you want to learn design patterns
Getting started with software architecture and design is about understanding and mastering design patterns.
Design patterns have become a "standard term" for software developers
Learning Design Patterns is a shortcut to personal improvement
No need to reinvent wheels . Learning
Design Mode----Design Mode Summary (end)
From the study of design patterns to the study of visitor patterns, the learning process of my design patterns has ended. This process lasted for several months and it was almost a snail bait crawling J. The design pattern is like Zhang Wuji's "jiuyang magic", which is very powerful. He shows object-oriented concepts a
Php design patterns-summary, php design patterns --. Notes on php design patterns-summary, php design patterns-1. general definitions of the introduction of design patterns are not mentioned. I just want to talk about the design patterns
on the structure of head first design patterns. It can also be called the study notes of this book, but it is more about the gradual explanation of the original book, we strive to join in more personal thoughts and opinions, hoping that they will eventually resonate with everyone.
Several heroes and their predecessors have already written articles on the Design Pattern series in the garden. I have absorbed too many excellent articles from them. I wou
To correctly use state and policy patterns in Java applications, developers need to be aware of the differences between the two patterns. Although the structure of the state and policy patterns is very similar, they also follow the open and closed principle, representing the solid design principles of the ' O ', but their intentions are completely different. The
Interaction designers often meet this scenario: after a bit of brooding and struggling, the need for PD is quickly completed. Of course, the process is submitted to the visual designer. But in the visual design process, found that some user behavior and operation path, in the demo did not involve, Of course, the visual designer will be back to rework. This is the only way to make sure that the problem is fully designed.
If the interaction designer can fully master the interaction design princip
The basis of reusable object-oriented software-design mode, with its reusable design intention, ingenious logical thinking by the vast number of object-oriented program design is sought after. But many programmers often turn the question of thinking into what patterns they encounter. This kind of confucianism、the thinking has seriously influenced the artistry of the program design in some degree, and solidified the idea of the programmer, which violat
Common java design patterns, java Design Patterns
1. Factory design model.
Reference: http://www.cnblogs.com/zhouqiang/archive/2012/07/20/2601365.html
There are three types: Simple Factory, Factory Method, and Abstract Factory)
Simple Factory:
1. Similar Products Abstract The interface IProduct. The specific product implements this interface. 2. Define the Factory class and provide a static getPro
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