what is basic rule of netiquette

described are valid. The specific values are: SOURCEValid in the source file (that is, the source file is reserved)　　　　 CLASSValid in class file (that is, class reserved) RUNTIMEValid at run time (that is, run-time retention) We used @retention (Retentionpolicy.runtime) in the examples in how to

In the process of establishing a session, we must apply it to the SIP protocol. Some friends may not understand this agreement. It doesn't matter. Here we will explain the content of this Protocol. You may be familiar with the SIP protocol. The Session Initialization Protocol is an application layer control protocol. So what are more specific functions and applications? It can be used to create, modify, or

Date: December 15, 2016 Talk about basic grammar first; Most are to operate the form; JS dynamic effects and data interaction (Ajax? ） JS also has its own API JS most of the DOM operations are for input. Case study, a simple check on the registration page, a box for null values or incorrect values, and then learn to write the data on the page later. JS is a scripting language, lightweight, can be inserted

, passing the object space to the self parameter of init ,The procedure for the person () # class name + (): The process of instantiating (the process of creating an object)Person () Instantiate object, instance, objecta.-- Static variables in a manipulation object1.0 dict All content in the query object20,000 can.print(ret.name)ret.hith=1.68del ret.hobbyret.name=‘高小波‘ print(ret.__dict__)b.-- Static variables in the object manipulation classPrint (ret.name) # If there are objects in the object w

Basic question: What is the object reference problem? My_val = 5; global $ global_obj; $ global_obj-> my_val = 10; echo $ p-> my_val; // output 5var_dump ($ p = $ global_obj ); // return false?> Why is the result 5 instead of 10; My understanding is: in PHP5, unless y

vbscript| Basic Tutorial Microsoft Visual Basic Scripting Edition is the newest member of the Visual Basic family of program development languages, which applies flexible Script to a wider range of areas, including Microsoft Web client script in Internet Explorer and script for Web server in Microsoft Internet Informat

applications, the enterprise needs an SOA base, which is part of the SOA platform. The SOA base must support all relevant standards and the run-time containers that are required. A typical SOA infrastructure is shown in Figure 3. Each part of the structure is discussed in the next section. SOAP, WSDL, UDDI Wsdl,uddi and SOAP are the

Click to enter _ more _java thousand questions What is the difference between a local variable, a class variable, and an instance variable Before we talk about the difference between local variables, class variables, and instance variables, we need to look at Java variables. 1, what is the Java variable in the mathema

This article mainly tells about the basic structure of the Ajax grammar, there are examples of introduction, so that we can learn more clearly. Now let's see this article together. Code templates: $.ajax ({ type: "POST", URL: "/login", contentType: ' Application/x-www-form-urlencoded;charset=utf-8 ', data: {username:$ ("#username"). Val (), password:$ ("#password"). Val ()}, DataType: "J

crash Save and restore the cursor position and open buffer status (Session function) Two files can be differentiated and the diff mode of the synchronization function can be implemented. Remote File editing Omni completion (context-related completion) [Working mode] Vim derived from VI has multiple modes. This unique design can easily confuse beginners. Almost all editors have two modes: insert and execute commands. Most Editors Use a different method than VIM: Command menu

functionality. Website using the mapping tag in the server Admin program, the extension adds a content type of: Wwwserver/html-ssi The CERN server does not support SSI, and with SSI scams, a Perl script can be downloaded to http://sw.cse.bris.ac.uk/WebTools/fakessi.html to allow your CERN server to use some SSI instructions. (Exec directives are not supported.) ） 　 SSI Instruction Basic Format SSI Instruction

1. The concept of Data Warehouse began in the 1980s S and first appeared in the book William H. Inmon, known as "the father of Data Warehouse. As people deeply recognize and constantly improve the research, management, and maintenance of large data systems, after summing up, enriching, and concentrating the experience of multiple lines of enterprise information, A more precise definition is provided for the data warehouse, that

At the beginning of the article, I declare that this is another article with no question. Basically, I want to talk about how to learn English at the same time when learning programming. I will introduce two methods to you: one is learning programming and the other is learning English. How much money does a learning method like this sell on the Internet? Here

the same way as the HTTP protocol, and it is transmitted in either TCP or UDP. A metaphor is a good idea. Both TCP and UDP are highways, and for the moment TCP is considered a general highway, UDP Highway, SOAP and HTTP are all cars, then both soap and HTTP can run on TCP and UDP. Said soap can be transmitted via HTTP, which

What is DHCP Snooping? This problem may not be very clear to many friends. Here we will give a brief explanation of this problem. DHCP Pnooping is a DHCP snoop. It monitors users through DHCP interaction packets between the Client and the server, and DHCP Snooping provides a DHCP packet filtering function, filter illegal servers with proper configuration. The fol

With the development of the network, more application settings have been gradually popularized, and we are not simply using some specific protocols to complete the work. It is like Telnet, because it is gradually used, and many people do not know what it is. Next we will introduce this classic remote logon protocol.

Donuts 1984 :GNU Project and FSF Foundation established , GNU,1984 , Storman began the GNU Project, this project in order to create a free, open UNIX operating system, just beginning to write his own applet, and later a bunch of people know the free GNU software, so The GNU project gradually opened up its popularity, and later he and some engineers wrote the GCC compiler tool, and also wrote a basic interface that could invoke the C function librar

XML XML is a shorthand for extensible Markup language, an extensible identity language. This is the definition of the standard. So what is the symbol language, and why is it called extensibility? has been a bit confusing. I think it would be better for us to understand this

After the DOCTYPE is declared, the following code is: Usually the code we HTML4.0 is just, what is the "xmlns" here? This "xmlns" is an abbreviation for XHTML namespace, called the "namespace" declaration.

Many Seo predecessors have answered this question. The answer is: 2-8%, 3-7%, less than 10%, or 5%. Choose one. Keyword density is a fuzzy concept rather than an absolute one. The higher the keyword density, the better. In the following explanation, you may understand what the keyword density means? The workflow of the search engine