This problem has actually plagued me for a long time. I have asked many people what is "null? What's the purpose?
Most people answer: "null is a special 0 defined by the system. Pointing your initialized pointer to it can prevent the evil effects of" wild pointer. "
Today, I met a C-language pen question, which
declaration. The same is true for XSL stylesheets. The first line of any XSL document is actually an XML declaration:
is XSL the same as XML?
Both and not. Yes, because they follow the same grammatical rules (only a little bit of difference, as I'll say below). No, because they are different: XML is used to host data
The so-called generation of documents is to copy the relevant directory table of the file to the area specified in main memory, the establishment of a file control block, that is, the establishment of the user and the file connection.The so-called closed file is the user declared that the file is no longer in use, the
1 in-progress validation of the document 2 determines the rendering mode of the browserStandard mode is strict,Weird patterns and promiscuous patterns are not allowed, old, wrongBusiness hooks with progressive enhancements elegant downgradeIncremental increase is mainly for the bottom version of the browser for page construction, to ensure basic execution. Interactive and improved for high-version browsers,
The first is to use manual or automatic means to run or determine the process of a system. The purpose is to check whether it meets the specified requirements or to find out the difference between the expected results and the actual results.
Second, software testing is to carefully design a batch of test cases based o
Recommend a text Dr. Hangyuan Li on my understanding of machine learning machine learning and natural language processingHttp://www.thebigdata.cn/JieJueFangAn/13162.htmlDr. Hangyuan Li's "Talking about my understanding of machine learning" machine learning and natural language processingThis article is well written, and it is understandable to get started.To know that w
What are JDK and JRE? What is the purpose? (Post)
Article category: Java programming
You must choose whether to install a separate JRE when installing JDK. It is usually installed together. I also recommend that you do this.This helps you better understand the difference
What are JDK and JRE? What is the purpose? (Post)
Article category: Java programming
You must choose whether to install a separate JRE when installing JDK. It is usually installed together. I also recommend that you do this.This helps you better understand the differences b
What are JDK and JRE? What is the purpose? (Post)
Article category: Java programming
You must choose whether to install a separate JRE when installing JDK. It is usually installed together. I also recommend that you do this.This helps you better understand the differences b
What are JDK and JRE? What is the purpose? (Post)
Article category: Java programming
You must choose whether to install a separate JRE when installing JDK. It is usually installed together. I also recommend that you do this.This helps you better understand the differences b
The recent author every day from the major webmaster forum to see the most is the "site ranking how to rely on the front" topic, ask these questions stationmaster most is to do search optimization has a year or so, for search engine ranking rules of a smattering of the state. They are looking for a breakthrough, to find a way to overcome their competitors, and here I also discuss with you some of my views o
Dynamic panel is a very frequent component used in Axure prototyping, and its main purpose is to achieve some dynamic interaction effects.
So, if the dynamic panel uses unfamiliar words, the production of Axure prototype will have a great impact, then the dynamic panel can do what. There are several main aspects:
1. H
In the current information security field, it seems that risk management has become synonymous with information security. Security seems to be inseparable from risk management. Before building a comprehensive security system, risk assessment is required. Risk assessment may appear in almost all security documents, security standards, and security specifications. It seems that few people in the world are questioning whether a risk assessment
The complete process of performance testing work, the purpose, and what is most criticalSystem Test Categories: Functional testing (correctness, fault tolerance, concurrency logic, associated content), security testing, performance testing (stress testing, response time), strength testing, capacity testing, recovery testing, user interface testing, inter-interfac
Career planning has now become a fashion, but what is the purpose of career planning? Some people have a profound understanding and regard career planning as the fundamental guarantee for career development. Some people may have misunderstandings and are still confused. They believe that career planning is only require
[My C language interview series] 001 static What is the purpose?
[Question] What is the purpose of static?
The answer is:
1. restrict the scope of Variables
2. Set the storage do
1. What is the purpose of static? (Please specify at least two types)
1) In the function body, a variable declared as static remains unchanged when the function is called.
2) in a module (but in the function body), a variable declared as static can be accessed by the function used in the module, but not by other functi
What is the purpose of php's cache technology, especially the smarty technology? I know it is cache, but what is the main purpose: more php Cache technologies are designed for specific
What is the main purpose of setTag () getTag () methods of View ?, SettaggettagExample: Method setTag () and getTag () play a role in View
The main reason why I found such a problem is that I only knew how to use it when I learned ViewHolder. At google, I found stackoverflow had a good explanation. Translation 2.
Sour
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