how many bytes in one megabyte

http://maimode.iteye.com/blog/1341354 has been confused in the use of, and always did not understand the Chinese characters in Java occupies the number of bytes, each time is evaded the past. Today, a byte-encoding problem has made me have to rethink the problem of char and encoding. Here is a reference to the information in the discussion: Http://www.iteye.com/topic/47740 writes (because the original author confused byte and bit writes, I have m

there is a Unicode encoding, it is only a representation of the rules, does not correspond to the specific implementation of the form. uni-This prefix in English means the meaning of unity, it attempts to express the language of the world in a unified code, but Unicode only specifies the binary data for the character, but does not specify that the binary data is stored in memory with a few bytes, and then it is messed up. Countries in the realization

When we talk about pointers, it is often assumed that it is something that can be represented by a void * pointer, which is 8 bytes in size under the x86_64 platform. For example, here is an excerpt from a Wikipedia article on x86_64: Pushes and pops on the stack is always in 8-byte strides, and pointers is 8 bytes wide. From the CPU point of view, the pointer is nothing more than the address

Objective Here I give you a few groups of test cases can be a try, why not easy to use. 1, limit 10 bytes, enter 2 emoj after 8 bytes (a emoj is 4 bytes), then enter a Chinese to see how the results (Chinese UTF8 accounted for 3 bytes) 2, limit 5 characters, one emoj is 2 characters, the other is one. Enter two emoj

First, IntroductionIn order to unify the world's character sets, the Unicode character set is popular, Java also supports Unicode encoding, that is, in Java the code point value is stored in, that is, either ' A ' or ' medium ' occupies two bytes.Code point value: The code value corresponding to the character typeface in the Unicode encoding table;Code unit: A char in Java, which can be a basic unit that is considered a character encoding Second, the code to intercept the string based on byte im

Believe that every computer users know that the computer connected to the network, the local connection to connect, and send packet bytes and received packet bytes both to normal, the network can be used normally, otherwise there will be such or such a problem. However, sometimes people will encounter the local connection received packet bytes very little situati

Because of the different operating system memory allocation, resulting in the software development process, the need to compile different versions of software, here with VS for example. 1, compile the program according to need to choose different compilation environment: X86 and Win32 bit 32-bit program, X64 64-bit program, can choose different editing conditions to form different bits of software. 2, the basic data type in the code, will be based on the operating system's number of digits alloc

[To] characters, bytes, and encoding From: http://www.regexlab.com/zh/encoding.htm Level: Intermediate Abstract: This article describes the development process of character and encoding and the correct understanding of related concepts. Examples illustrate how to implement encoding in some practical applications. Next, this article describes several misunderstandings about character and encoding, the causes of garbled characters, and the methods to

Label:Error executing nova-manage DB sync: 2012-03-24 14:07:01 CRITICAL Nova [-] (Operationalerror) (1071, ' Specified key was too long; Max key length is $ bytes ' ) ' \ncreate TABLE user_project_association (\n\tcreated_at datetime, \n\tupdated_at datetime, \n\tdeleted_at datetime, \ n\tdeleted BOOL, \n\tuser_id varchar (255) NOT NULL, \n\tproject_id varchar (255) is not NULL, \n\tprimary KEY (user_id, Projec t_id), \n\tcheck (deleted in (0, 1)), \n

Label:Http://www.jb51.net/article/58726.htm Today found that the site is a bit slow, found in the MySQL log hint mysqld-nt:out of memory (Needed 1677720 bytes), after the troubleshooting is due to the recent adjustment of MySQL some parameters caused, thought the memory is not afraid of the large, 32-bit system real content utilization is very low, it is said that no more than 4G, our 32G memory is really wasted, or later use win2008 R2 or CentOS syst

a brief introduction to WC The WC command is used to print the number of lines of text, number of words, number of bytes, and so on (print the newlines, words, and bytes in files). In Windows Word has a "word count" tool, you can help us to the selected range of words, characters count out. The WC command under Linux can implement this function. When using VI to open a file, the information below will also

Java data types are divided into: basic data types and reference data types.Number of bytes for the base data type: Data type Bytes Default value Byte 1 0 Short 2 0 Int 4 0 Long 8 0 Float 4 0.0f Double 8 0.0d Char