how many bytes in gig

In the course of studying python3.x, I encountered a tangle of questions for several days: Always prompt "A Bytes-like object is Required,not ' str '" The bytes type is added to the python3.x, and the Str method is modified to allow STR and bytes types to be converted to each other. #!/usr/bin/env python#-*-coding:utf-8-*-a = "haha" #字符串转换成字节b =

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

One of the most important new features of Python3 is a clear distinction between strings and binary streams. Text is always unicode and is represented by the STR type for display. The binary is represented by the bytes type for storage and transmission. Bytes is a sequence of byte, and STR is a sequence of Unicode. Python3 does not mix str and bytes in any implic

In the Java language, the number of bytes in Chinese characters depends on how the character is encoded, and in general, when iso8859-1 encoding is used, a Chinese character is only 1 bytes as an English character, and a Chinese character is 2 bytes when using GB2312 or GBK encoding. , while using UTF-8 encoding, a Chinese character will account for 3

Original: The Bytes/str dichotomy in Python 3Python 3 The most important new feature is probably a clearer distinction between text and binary data. Text is always Unicode, represented by the STR type, and binary data is represented by the bytes type. Python 3 does not mix str and bytes in any implicit way, which makes the distinction between them particularly cl

Recent projects have a need to use JS to calculate a string of strings written into the memory of the localstorage, it is well known that JS is encoded using Unicode. There are n implementations of Unicode, most of which are UTF-8 and UTF-16. Therefore, this article only discusses these two types of coding.The following definition is excerpted from Wikipedia (Http://zh.wikipedia.org/zh-cn/UTF-8) and has been partially abridged. UTF-8 (8-bit Unicode Transformation Format) is a variable-l

A string consists of one character. Each character is represented by one or more bytes, and each byte is represented by eight bits. In C #, strings are usually declared by strings. characters are declared by char, bytes are represented by bytes, and bit is represented by bit. For detailed analysis, see the following test code analysis: Complete Test code: 1 using

The C standard does not give a detailed specification of how many bytes the base type should be. Detailed with the machine, OS, compiler, for example, the same is in the 32bits operating system, VC + + compiler under the int type is 4 bytes, while Tuborc is 2 bytes.Therefore, the width of the int,long int,short int may vary depending on the compiler. But there are several ironclad principles (Ansi/iso):

First, in the performance test, any separation from the bottom of the content, for performance testing, are incomplete, any program, what the middleware if there is no operating system and computer support, are meaningless, because in the computer world, there are some concepts that we can grasp and understand, such as: bits, words, word length First of all, a bit: Bits represent bits, commonly called bits, which is the smallest unit of computer storage, similar to the concept of (two, kg, grams

From: http://hi.baidu.com/zhuhailangke/blog/item/5b7b0c1392fd7b47f919b86f.html Today, when you create a database in the query analyzer, a warning is displayed: The Table XXX has been created, but its maximum size (8926) exceeds the maximum number of bytes (8060) in each row ). If the length of the result row exceeds 8060 bytes, insert or update of the row in this table will fail. The size of each row in

Unicode only has one character set. The three characters in Chinese, Japanese, and Korean occupy part of Unicode 0 x to 0x9 fff Unicode is currently widely used in UCS-2, it uses two bytes to encode a character, for example, the Chinese character "jing" is encoded as 0x7ecf. Note that the character encoding is generally expressed in hexadecimal notation. to distinguish it from decimal notation, hexadecimal notation starts with 0x, and 0x7ecf is conver

/*Sizeof (data type). The returned value is the number of bytes occupied by the data type.Example: sizeof (INT) = 4Sizeof (char) = 1Sizeof (double) = 8Sizeof (variable name). The returned value is the number of bytes occupied by the variable.Summary:A pointer variable occupies only four bytes regardless of the number of bytes