\uxxxx This format is a Unicode notation that represents a character in which XXXX represents a 16-digit, range-0~65535. Unicode hexadecimal numbers can only contain numeric 0~9, uppercase letters A~F, or lowercase a~f. It is important to note that the size-to-end problem of Unicode, which is usually small-ended, such as \u5c0f, which represents the ' small ' wor
Article 2: Java character encoding Series II: Unicode, ISO-8859-1, GBK, UTF-8 encoding and mutual conversion
1. Function IntroductionIn Java, a string is encoded in Unicode. Each character occupies two bytes. The two major functions related to encoding are: 1) parse the string into a byte array using the specified encoding set, unicode-> charsetname conversion pu
ASCII
The ASCII code consists of a total of 128 characters. It only occupies the last seven digits of a byte, and the first one character is uniformly set to 0. For example, the space is 32 (Binary 00100000), and the uppercase letter A is 65 (Binary 01000001 ). The 128 symbols (including 32 control symbols that cannot be printed ).
Unicode
As mentioned in the previous section, there are multiple encoding methods in the world. The same binary number
A computer can only handle binary, so it needs to be represented as binary in order to be understood and recognized by the computer.A common practice is to assign an ID to each letter or kanji, and then use binary notation for that ID, which exists in memory or on disk. The computer can know what this ID is based on the binary data, and then, based on the ID, knows what letter or kanji the binary data represents.The thing that Unicode does is to assig
Unicode Standard in the bitwise space.Although all countries have defined their own codes, they are not common to each other, because they can only be used in 65535 locations in two bytes, but it does not form a unified system. For example, if you use which segment I use, mutual encoding is not uniform, after a gb2312 code segment is parsed on shift-JIS, it becomes garbled. In this case, Unicode encoding i
Article 2: JAVA character encoding Series II: Unicode, ISO-8859-1, GBK, UTF-8 encoding and mutual conversion
1. Function IntroductionIn Java, a string is encoded in Unicode. Each character occupies two bytes. The two major functions related to encoding are: 1) parse the string into a byte array using the specified encoding set, unicode-> charsetName conversion pu
Original address:http://www.cnblogs.com/kingcat/archive/2012/10/16/2726334.html Why Unicode is requiredWe know that the computer is actually very stupid, it only know 0101 such a string, of course, we look at such a 01 string when it will be more dizzy, so many times in order to describe the simple are in decimal, hexadecimal, octal notation. are actually equivalent, It's not much different. Other things, such as text pictures and other things the com
UTF encoding
The UTF-8 is to encode the UCS as a 8-bit unit. The encoding from UCS-2 to UTF-8 is as follows:
UCS-2 encoding (16 binary)
UTF-8 byte stream (binary)
0000-007f
0xxxxxxx
0080-07ff
110xxxxx 10xxxxxx
0800-ffff
1110xxxx 10xxxxxx 10xxxxxx
For example, the Unicode encoding of the word "Han" is 6c49. 6c49 is between 0800-ffff, so I'm sure to use a 3-byte template: 1110xxxx 10xxxxxx 10xxxxxx. The 6c49 is written as binary: 0110 110001 001001, usi
We often encounter coding problems. Java is known as the international language because its class file is UTF-8, and the JVM runs with UTF-16 (as for why the JVM uses UTF-16, I have not read the relevant data, but I guess it is because Java is a character (char) is a 16-bit, UTF-16 is a double-byte encoding, which is Unicode encoding. The goal of Unicode is to support all character sets in the world, meani
2007-12-13 10:50:47| Category: Python utility software compilation | Report | Font size Subscription ASCII is a character set, including uppercase and lowercase letters, numbers, control characters, etc., which are represented by a byte, with a range of 0-127Unicode is divided into UTF-8 and UTF-16. UTF-8 variable length, up to 6 bytes, characters less than 127 are expressed in one byte, and as with the ASCII character set, the English text under ASCII encoding does not need to be modified
If it's just a Unicode utf-8 encoded algorithm, the internet is everywhere, but a lot of people are you copy me, I copy you, do not understand why and do, in addition to the simplest PHP for Unicode transcoding utf-8 encoding functions, but also in-depth discussion of the two coding relationship, Understand that some of the old things on the internet, are seriously redundant and outdated, because from the b
Since I started programming, I have been familiar with coding and have never mastered the essence. For example, what is the relationship between ansi and gbk? What is the relationship between gbk and gb2312? What is the difference between ansi and utf8? What is the relationship between Unicode and utf8, ansi, gbk, gb2312, utf8 (with or without Bom), ut...
Since I started programming, I have been familiar with coding and have never mastered the essence
Different representations of Unicode charactersUnicode characters are represented in HTML, CSS, and JS in different ways, as described below.The original is published hereCSS notationFirst, a very common font icon code for bootstrap:.glyphicon-home:before { content: "\e021";}The code above is the e021 Unicode code for this character, which is 16 binary.Grammar:‘\ + 16进制的
What'sThe point?Windows NT4 and2 k run on Unicode. A great pointer ofNet API functions provided by MicrosoftRequire Unicode and translating strings in and out of Unicode just to push themThrough these functions is a real pain. Building an application in Unicode notOnly allows easier access to these functions, but also
I have written a post about the Unicode encoding range of Chinese Characters in UNICODE, but it is not very detailed. Today I have studied Unicode again and provided a detailed Unicode value range.
The Unicode object of this study is Un
Why Unicode is requiredWe know that the computer is actually very stupid, it only know 0101 such a string, of course, we look at such a 01 string when it will be more dizzy, so many times in order to describe the simple are in decimal, hexadecimal, octal notation. are actually equivalent, It's not much different. Other things, such as text pictures and other things the computer does not know. That is, to represent this information on a computer, it mu
Previously wrote a post is written in Chinese in Unicode encoding range Unicode Chinese range, but not very detailed, today again study the next Unicode, and give a detailed range of Unicode values.The Unicode object for this study is the
Since the contact programming, has been to the coding knowledge smattering, always has not mastered the essence.For example: the relationship between ANSI and GBK, what is the relationship between GBK and gb2312, what is the difference between ANSI and UTF8, what is the relationship between Unicode and UTF8, and ANSI, GBK, gb2312, UTF8 (with or without BOM), UTF16, UTF32, Unicode between the conversion and
Universal Character Set (UCS)
UCS is a standard character set developed by ISO 10646(or ISO/IEC 10646) standards.The UCS includes all other character sets (which contain the known language's characters).ISO/IEC 10646 defines a 31-bit character set (the first constant is 0, which takes up 4 bytes).Unicode (Universal code, International Code, Uniform Code, single code)
Encoding method:Unicode encoding space from "u+0000" to "u+10ffff"( A tot
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