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1 Original Address
Http://learnpythonthehardway.org/book/ex43.html
2 Introduction
2.1 Translators
Especially in the learning process of programming language, it is often entangled in the details of the language itself, and then find that the process of learning is becoming more and more boring, so as to finally give up the first language that has just started and plunge into a new cycle. Because they forget: happiness comes from creation. Of cours
dynamics of components. This is because the high-frequency dynamics involve the internal structure of each component, while the low-frequency dynamics involve the interaction of each component.
4) hierarchical systems are generally composed of only a few different subsystems in different ways of arrangement and combination.
5) We found that the complex systems that are running are always evolved from the simple systems that were previously running ...... Any complicated system that is randomly
This article is a short story about PHP serialization/object Injection Vulnerability Analysis, which describes how to get a remote shell for a host.
If you want to test this vulnerability yourself, you can do so through XVWA and Kevgir.
The first step in exploiting the exploits, we begin to test whether the target application has PHP serialization. In order to assist the test, we used the Burpsuite superse
return New F ();}He is an encapsulation of class inheritance, in fact, the transition object is equivalent to the subclass in the class inheritance, but in the prototype as a transitional object appears, in order to create to return the new instantiated object.Of course, if you feel the need to cache the F transition, you don't have to create a new transition class F each time, and then the Object.create (
background, and it successfully dissolves the "software crisis" by emphasizing the expansibility and repeatability of design and implementation. Since then, the object-oriented design of the program began in the industry, and gradually become the mainstream. The evolution from C to C + + happens at this time, naturall
The basic principle of object-oriented design http://www.cnblogs.com/malaikuangren/archive/2012/03/22/2411315.htmlInterface:Understand:An agreement between the parties.Benefits:interface and implementation separation;Easy to expand;Object-Oriented
, in fact, it has embodied the characteristics of Class and Class hierarchies in the concepts of classification structure, attributes, operations, and message Association.3. OMT MethodThe OMT method was proposed by James Rumbaugh and other five people in 1991. Its classic book is "Object-Oriented Modeling and design ".
to human thinking, so as to simulate the structure and behavior of objective entities, in this way, the designed software can directly describe the real world as much as possible, construct reusable and maintainability software for modules, and limit the complexity of the software and reduce the development and maintenance costs. It is through Object-Oriented Analysis
Object-Oriented Design _ C ++ 1 and object-oriented design _ c
Mastering a language is not suitable for me. I like to quickly master 50% of a language.
Three main features of object-
1. When it comes to object-oriented, a topic that is not open, is the process oriented.Process-oriented for simple, non-collaborative transactions. Process-oriented = decomposition problem + logic first = First Detail, then whole.Compared to the process oriented,
Introduction to the six principles of object-oriented design and six major object-oriented design
In fact, they all complement each other. That is to say, some principles must be used to implement themselves.
The six principles
-oriented programming is born in this background, and it successfully dissolves the "software crisis" by emphasizing the expansibility and repeatability of design and implementation. Since then, the object-oriented design of the program began in the industry, and gradually b
prototype methods are added to the sub-class.Instance1.colors.push (' black '); Console.log (instance1.colors); // [' Red ', ' blue ', ' green ', ' black '] // [' Red ', ' blue ', ' green ']instance1.getname (); // CSSbook instance2.gettime (); // -Note: A subclass that wants to add a prototype method must pass a prototype object, one way to add it through the form of a point syntax, or it will be directly assigned to an
the following questions?
1. If a lot of people are responsible for perfecting this message book, the establishment of a part of the entity relationship, a person responsible for the data operation layer of code, so it is easier to division of labor?
2. What if I want to develop this message further, to record in a database, or to add paging functionality?
To implement the functionality presented in the second question above, simply add a paging metho
1. Explanations of themProcess-oriented analysis method is structured, the analysis method has the characteristics of the structure, from the overall point of view to think about the modeling process, such as to create a library book management system, the overall layout design
In the past, I felt that I could not use UML. I didn't know what I was doing, that is, I knew there was a use case diagram, a class diagram, and a sequence diagram. At most, I wanted to express my needs, express the design to reach consensus. I recently worked on a project to know that UML is actually quite useful. From requirement to analysis, from analysis to
. NET technology is vast, and no book can be used up, because as a mainstream development platform, it covers too much content. However, when I read Mr. Jin xuliang's book (basic article + application Article), I began to doubt my argument. Yes, this book is still not exhaustive. net. However, it may be incomparable in terms of technical breadth and depth. In oth
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