A simple three-tier architecture written using the dapper Relational object mapper.Dapper:stackoverflow in the use of a miniature ORM, the framework of the overall efficiency of the high, lightweight ORM framework. There are more extensions on the
Defined:The ability to dynamically extend an object without having to change the original class file and use inheritance. It is by creating a wrapper object, that is, decorating to wrap the real object.Overview:1. The decorator and the decorated
[Android] three methods of application language switching
Android has done a good job in international and multi-language switching. An application only needs to name the values-[language] folder of the corresponding language family, you can
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".
PHP design patterns-six principles. PHP design patterns-six principles code that follows the six principles is generally considered to be scalable and reusable: These six principles should be followed by any object-oriented language, six principles
The rule mode is a commonly used design mode. It is mainly embodied in the fact that objects can have certain behaviors, but different implementation methods are used in different scenarios!
Similar situations are often encountered in software
Introduction to Builders ' modelsThe builder pattern separates the construction of a complex object from its representation, allowing the same build process to create different representations. In other words, the build pattern is the object's
Proxy: Provides a proxy for other objects to control access to the object. acts as a mediator between the client and the target object. (ext: http://www.cnblogs.com/rollenholt/archive/2012/11/28/2792779.html)Proxy mode: Mainly involves three aspects:
1. Problems arising from successionIntroduction: Said Brother Wai that year entrepreneurial open shop-selling soy milk! Because of pure soy milk, branch almost Bloom County City all village, because the development is too fast, so eager to achieve a
Support Original: http://blog.csdn.net/hguisu/article/details/75291941. Overview
In a software system, some types, because of their own logic, have two or more dimensions that change, so how do you deal with this "multidimensional change"?
design mode (vi) bridge mode bridges (structural type)1. Overview
In a software system, some types, because of their own logic, have two or more dimensions that change, so how do you deal with this "multidimensional change"? How can you use
Command class:
1. Command role: declares an abstract interface to all specific command classes. This is an abstract role.
2. Specific command role: Define a weak coupling between the recipient and the behavior, and implement the Execute method,
First, the definitionIn a software system, some types, because of their own logic, have two or more dimensions that change, so how do you deal with this "multidimensional change"? How can you use object-oriented technology to make this type easily
S.O.L.I.D is the acronym for several important coding principles (programming Priciple) in object-oriented design (OOD) and object-oriented programming (OOP).
Principles of object-oriented design
SRP
The single
An example rewritten by yourself following the Bridge Mode example in :
There are n aircraft manufacturers (airbus...), and each aircraft manufacturer has passenagerplane and cargoplane.
Code As follows:
1. aircraft manufacturer abstract interface:
Builder mode: Separates the construction of a complex object from its representation so that the same build process can create different representations
Builder: Specify an abstract interface for each part that creates a Product object
1. Overview
In a software system, some types, because of their own logic, have two or more dimensions that change, so how do you deal with this "multidimensional change"? How can you use object-oriented technology to make this type easily
A pattern is a fixed solution that solves a problem in a situation.All creation patterns are used as a solution for creating or instantiating objects.1 Simple Factory mode
The simplest way to create an object is to use new to create an
The decorator mode. I have always remembered this mode. Because of Java I/O, I used to think that Java I/O is a class explosion. Since I understood the decorator mode, I think the IO System of Java is very cute. Now let's look at what the
The reactor design mode is an event-driven design mode.
Pattern-oriented software architecture, Volume 2
This mode is described in detail.
The structure of this mode is as follows:
The handle in the figure corresponds to the handles
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