long data

  The preceding statement (January 1, March 19, 2006 ): When I got on the machine three times, I had multiple rounds in the data center. Because no one asked a question, I took the initiative to observe how many students wrote the program, some of

Oracle date functions: Months_between: returns the difference of the month between two dates months_between ('01-EP-95 ', '11-Jan-94') ==> 19.6774194 add_months: Number of copies added to the date. add_months ('11-Jan-94 ', 6) ==> '11-JUL-94'

BecauseSysfs is a virtual file system similar to/proc. You can read and write the corresponding file in sysfs or control the number of kernel space.According to the data, after reading all kinds of articles, I finally had a deeper understanding of

# Include # Include # Include # Include // Define a devidStatic int mydev= 1119;Static int IRQ;Static char * devname = NULL; // Define arguments for this moduleModule_param (IRQ, Int, 0644 );Module_param (devname, CHARP, 0644 ); // Define a

For many reasons, when I first started learning programming, I didn't learn the C language. I learned the object-oriented C ++ directly. But now, in many environments, it is found that C is also a good language. It is particularly effective to use C

After Java 6, we were not only exposed to lock-related locks, but also to many more optimistic atomic modification operations, in other words, we only need to ensure that the modification is safe at that moment. After corresponding packaging, we can

I. BSTR, lpstr, and lpwstr In all programming methods of Visual C ++. net, we often use such basic string types, such as BSTR, lpstr, and lpwstr. These data types are similar to the above because of data exchange between different programming

Definition and declaration of Arrays Before using an array, you must declare an array. You can also use an implicit declaration method. The method for declaring an array is the same as that for declaring various types of variables. It can be

BSTR, lpstr, lpwstr, cstring, variant, colevariant, _ variant_t, ccombstr, _ bstr_t visual c ++. net involves multiple programming methods such as ATL/ATL server, MFC, and hosting C ++. It is not only powerful but also widely used. In programming,

Bitwise AND operator (&) The two data involved in the operation perform the "and" Operation in binary bits. Calculation rule: 0 & 0 = 0; 0 & 1 = 0;  1 & 0 = 0;   1 & 1 = 1;       That is, if the two digits are "1" at the same time, the result

Before kernel 2.6.21, clock interruption is a period, that is, the frequency is Hz. The system always passively accepts clock interruption and then processes the interruption.Program. If there is no task to run, execute the idle. This may also be a

ArticleDirectory 4. Warning options 5. connection options GCC compiler (1) 4. Warning options During compilation, the compiler reports errors and warningsProgramThe GCC contains the complete error check and warning function,

Running Environment Windows NT/XP/2003 or above. NET Framework 1.1Sqlserver 2000Development Environment vs 2003 Purpose After learning network programming, you always have to do something.So I wanted to create a web content collector. Author

During this period of time, the work needs are converted from FLV stream to standard h264 and aac on rtmp. The server is an open-source project crtmpserver, client flex writing, video encoding h264, and audio encoding AAC, some protocol-related

1. There are two methods to declare an API function in VB: if we only use an API function in a form, we can declare it in the general part of the form code: The declared syntax is:Private declare function...Private declare sub .....Private

1. What is gdtIn protected mode, an important and essential data structure is gdt (Global Descriptor Table ).Why does gdt exist? Let's first consider the programming model in real mode:In real mode, we use the segment: Offset method to access a

In the previous blog, the initialization of the exception and unshielded interrupt section in the Interrupt Descriptor Table (IDT) is described. This article will analyze the initialization of the interrupt section. In the previous blog, we can see

Initial understanding: 1. Concepts of bank and L-bank 2. Internal Management of SDRAM register configuration in S3C2440   Frist part: Principle Analysis The S3C2440 is a 32-bit microprocessor with a 4 GB access space. However, it provides 1 GB

Comprehensive Analysis of pmtest1.asm-[orange's] in "writing an operating system by yourself" I recently learned how to write the OS. I have seen a strong post on the Internet. I don't know how to write this code.Segment mechanism for easy

In Ole, ActiveX, and COM, the variant data type provides a very effective mechanism because it includes both the data itself and the data type, therefore, it can realize various automatic data transmission. Let's take a look at a simplified version