byte length

Spcomm use attribute and usage in DelphiDelphi is a powerful, easy-to-use and fast code execution and other advantages of the visual rapid application development tools, it plays an increasingly important role in the framework of enterprise

Ec (2); php tutorial match Chinese Character regular expression match Chinese Character Regular Expression: [u4e00-u9fa5] Comment: Match Chinese character is really a headache, with this expression, it is easy to match double byte characters

Regular Expression matching Chinese characters: [u4e00-u9fa5] matching double byte characters (including Chinese characters): [^ x00-xff] application: calculate the length of a String (two-byte length Meter 2, ASCII character meter 1) String.

Share the encapsulated asynchronous Mysql dynamic library (DyNetMysql. dll) + project source code, and mysql asynchronous Mysql databases are often used for C ++ projects. The data provided by Mysql interfaces is quite primitive, such as field names,

Windows Kernel Api Learning Function exported by apipolicntoskrnl.exe in windows. We can call the kernel api just like the api at the application layer. However, the kernel api should note that if the function is exported and the function is

Background:Previous blog dicom:dicom Universal editing tools Sante Dicom Editor introduced the DICOM Universal Editing tool, found in the daily use process,"as long as the Sante DICOM Editor cannot open the data, It is basically possible to

  Assert: This module can be used after require ('assert ') is used for unit testing; The main function is to determine the expression value. When the expression is false, an exception can be thrown. Assert. fail (actual, expected, message,

The Java-language source program is compiled into a platform-independent ' bytecode program ' (. class file, 0, 12 binaries) through the Java compiler, which is then interpreted in the Java interpreter above the OS, and the JVM is the core and

Unicode is encoded like "u+4e25" or "\u4e25", in many cases 4 hexadecimal digits, sometimes more than one.Unicode encoding system can be divided into two levels of encoding and implementation:Encoding method: "Strict" Unicode is 4E25;Realization way:

Forward: Convert all types of data to byte[] and then 16 strings, such as:Short,int,long: You can press a multiple of 8 (1byte) (the number of bytes shifted by the respective number of bytes, each shift 8 multiple times) to the right Shift (>>>),

Today, when I access the Internet, I occasionally find the answer to my questions. H.264 video types The following media subtypes are defined for H.264 video. Subtype Fourcc Description Mediasubtype_avc1 'Avc1' H. 264

1. Set & add & replaceA. If sanitizekeys is true, the key is converted to a UTF-8-encoded string. In case of an exception, if errorhandler is not null, it is called backHandleerroronset function, return false, value is null exit.B. Find sockiopool.

 Username [\ W \-] {3, 12} 3-12 characters (including English letters, numbers ,'-','_') password [\ X21-\ x7e] {3, 8} 3-8 common characters (0x21 to 0x7e) age 1 [0-2] \ d | \ D {129} maximum years old date (19 | 20) \ D {2} [/\ s \-\.] * (0 [1-9] |

ARP attack Principle 0.136.136.16 0. ARPARP (Address Resolution Protocol) is a protocol used to handle the conversion from an IP address to a hardware MAC address of the NIC. This article mainly uses Ethernet as an example. Describes the principles

Common Unix Commands-directory and file operation commands1.1 ls [Syntax]: ls [-radcxmlnogrtucpfbqisf1] [directory or file...][Note]: The LS command lists the files in the specified directory. The default directory is the current directory./, and

I. Preface One of my teachers told me on a dark evening in May 1995 AD: "Xiao Yang, I will writeProgramJust like building blocks. Hurry up and learn some ole technologies... ". At that time, I thought," Are you kidding me? How do I build blocks to

The affiliated information can include 0, 1, or more independent affiliated data objects. There is a struct before each object.Cmsghdr structure. The header is followed by the padding byte and then the object itself. Finally, more bytes may be

(1) first write a Java class with the following content: Package com. bw. gb2py; Public class gb2py {Static{System. loadlibrary ("gb2py"); // load the DLL}Public native static string getpy (string name); // function declaration} (2) Compile the Java

 1. Determine Based on BOM first The BOM of the UTF-8: ef bb bf; the corresponding decimal value is: 239 187 191 if the first three bytes of the file match with it, the file encoding is utf8 The UTF-16LE BOM: FF Fe; the corresponding decimal value

Field Type Description Field Length and default value Char (Size) It is used to save string data of a fixed length (size) byte. The fixed length of each line (space filling for the remaining part). The maximum length is 2000