what is backwards compatibility

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What exactly is the relationship between UTF8 and Unicode encoding? What's the difference? _ Basic Tutorial

because the value is less than 0x80, as long as a byte of UTF8 transmission, than send Unicode two bytes faster. UTF8 is the "re-coding" method that comes out of Unicode for transmission. UTF8 to Unicode with the program I gave above the inverse calculation can be. UTF8 is a transition solution for existing ASCII systems to the Unicode system. UTF8

What is a broadband router and what are the functional functions?

What is a broadband router? Broadband router is a new network product in recent years, it comes into being with the popularization of broadband. Broadband routers in a compact box integrated router, firewall, bandwidth control and management functions, with fast forwarding capabilities, broadband routers flexible network management and rich network status and so

What methods does CSS introduce? What is the difference between link and @ import?

HTML files are displayed through CSS styles, that is, the page content is displayed in combination with XHTML and CSS. So what methods are there to introduce CSS styles into the XHTML file? I. inline reference CSS Add the style attribute directly to individual component labels. For example:No worries about templates-www.mb5u.com Advantages of this method: the lab

What is JSON and what to do with it

JSON is a string used to transfer data, involving how to turn JS into a JSON string: stringify () converts a JSON string into a js:parse () and a eval_r () difference between the parse and eval: eval: Can parse any string into JS (will also parse the embedded Trojan) Parse: Only parse the JSON form of the string into JS and attributes in the string are strictly quoted (security is higher)Eval: How to conver

What is the difference between a phone's own memory and a phone card?

phone firmware is often called ROM.TF card SD card CF card and other mobile phone memory card What is the difference? Which is better?Now the main memory card type is many, mainly have small flash card (cf card-compactflash), smart card (SM Card-smart media) and Memory Stic

Where is the X7 art mode of the cool great God? What is Art mode?

What is Art mode? The new art mode in the next Android4.4, the full name of the Androidruntime, is that Google's optimization stems from a company named Flexycore, which was recently acquired by the company, which has been working on the optimization of the Android system, and the art model in the company's optimization program Evolution. When Art mode

What is the response layout, how the response layout is designed

project? In the past when we design the site will be different browser compatibility problems, and now have to come to a different size equipment, how do we set it down? There is a need for solutions, hehe, when it comes to responsive layout , you have to mention media query in CSS3, which is a good thing, easy to use, powerful, fast ... Media Query

What is a Java Bean

JavaIntList();System.out.println(myList.size);Javaintlist's author is very satisfied, so the open source of the Java-int-list Library version 1.0. The file name is Java-int-list_1.0.jar. After publishing, many users were attracted to use Java-int-list_1.0.jar.One day, the author decides to save memory, do not cache the size variable, and change the code to this:Compile into Java-int-list_2.0.jarPublicFinal

Why clear float? What is the method of clearing float? Which is the ultimate method?

before, if only a simple closed floating, after is enough! Not as the desert "Clear Float" article: But only when using clearfix:after when the cross-browser compatibility problem There will be a vertical margin overlay bug, this is not a bug, BFC should have the features.In the actual development, the improvement scheme one because of the existence of Unicode c

What is the difference between UTF8 and utf8mb4 in MySQL?

length of the string, so it's natural to limit the length of the UTF8 to 3, for example, a CHAR of 300 bytes. As for the subsequent version, why not support the 4-byte length of the UTF-8 character, I think one is for backwards compatibility considerations, there is a basic multilingual plane outside the character

What is Unix and why is it so important?

most other operating systems, Windows NT is not developed into a Unix-like operating system. Of course, Microsoft does not start completely from scratch. To maintain the compatibility between DOS and earlier versions of Windows software, Windows NT inherits many settings in DOS, such as disk drive letters, backslash to distinguish file paths, and forward slashes as command line parameters. Why

Java thousand asked _02 basic use (010) _java, javax, Sun, org package what is the difference

JDK's standard library being too large. Of course some of the early javax were later incorporated into the standard library, and all should also belong to the new version of the JDK's standard library. For example, Jmx,java 5 was previously provided as an extension, but Jdk5 is part of the standard library, and all javax.management are part of the JDK5 standard library. com.sun.*is the implementation c

What if win10 software is incompatible and cannot be opened? win10 software is incompatible.

What if win10 software is incompatible and cannot be opened? win10 software is incompatible. With the widespread use of win10, it is inevitable that you will encounter incompatibility with the win10 system during the use process, let's talk about the following small series with our own solutions. I would like to giv

What is the difference between the PHP explode () function and the implode () function _php instance

, and the last element will contain the remainder of the string. If the limit parameter is a negative number, all elements except the last-limit element are returned. This feature is new in PHP 5.1.0. Program List:explode () example Program Run Result: AppleBananaGonn* Program List: Explode () example using the limit parameter Program Run Result: Array ( [] = = One [] = two|three|four) Array ( [] = = O

What is the role of adding x-ua-compatible and ie=edge,chrome=1 in HTML meta?

X-ua-compatible is a setting that has been added since IE8 and is not recognized for browsers below IE8.You can specify the compatibility mode setting for a Web page by setting the value of x-ua-compatible in Meta.The mode precedence specified in the Web page is higher than the mode specified in the server (via HTTP He

What is the. NET Framework?

The-.net framework is a repackaging of the Windows operating system's application interface libraries (API library); -The. NET Framework is a Java-like virtual machine runtime (Common Language Runtime) that borrows many of the concepts of a Java virtual machine, but the mechanism is more optimized (for example, it has a "deterministic garbage collector" that Jav

Basic knowledge is solid-but the interview cannot be done. What should I do?

a well-known fact-common knowledge. But do you have the ability to break out of jail, make a living independently from outside prison, and realize your dreams? Example 3 of knowledge and ability: Which three represent? knowledge? Three representatives on how to grasp corrupt officials, flat price, and establish the legal system: ability. Why can't they do it? Neither can nor. Far away, far away... What are we talking about? Basic knowled

What is a SysWow64 folder

64-bit Windows does not simply compile everything into 64-bit. Intel and AMD have their own plans for what the 64-bit CPU should look like. AMD's answer is straightforward: The new 64-bit processor should be able to maintain compatibility with 32-bit applications while increasing processing power. Intel would like to take this opportunity to design the next gener

What is thread security?

Http://baike.baidu.com/view/1298606.htmThread Security Directory What is thread security? Example Thread Security Thread Security Level Immutable Thread Security Conditional thread security Thread compatibility Thread opposition What

Reprint: Block chain: About soft fork and hard fork and what is consensus

No. 0 Chapter Introduction Bitcoin is a set of software, the software code to modify the upgrade will often involve two concepts, one is called a hard fork, a soft fork. What the hell does that mean? The most common definition in the community is the revision of consensus. But "consensus" specifically refers to

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