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Computer Programming

A category for questions about computer programming and programming languages.

10,506 Questions

What is XEmacs?

XEmacs is an X-Windows version of Emacs.

Emacs is a powerful text editor, originally designed for TTY consoles, and typically used today with TTY console emulators such as xterm common to practically all modern Unix or Linux operating systems. XEmacs is an adaptation of Emacs, designed to operate in the context of the X11 windows manager, offering simple support for menus and mouse operations, in addition to the traditional keyboard usage.

How long does a programmer take to make a professional Program?

Depends on how much dedication and time you are giving

If you give 100% 2 month

What range of numbers may be held in a nibble?

4 bits range of number. At most, this covers the range from 0 (zero) to 15 (fifteen) when encoded as binary numbers. However, some number systems exist that encode using a less compact scheme. BCD, short for binary coded decimal, doesn't use the A...F range of the hexadecimal system. For BCD numbers, a nibble only holds values 0 (zero) to 9 (nine).

How can knowledge of programming language characteristics benefit the whole computing community?

There is no single programming language that is ideally suited to solving every problem. When designing a solution, one of the first things we decide upon is which language or languages we will use to implement the solution and we can only do that when we are aware of the language characteristics. Choosing the wrong language can prove to be an expensive mistake, so it is important that we weigh up the pros and cons of each language, not only in terms of what those languages allow us to do but also in terms of the quality of the machine code produced by the language compiler. We also need to consider what libraries are available in addition to any standard libraries, because adapting existing mature code greatly reduces development costs; we don't waste time and money re-inventing wheels.

What is Object Query Language OQL?

OQL is a database query language(related to ODMG) that is based on SQL and

supports the adding, retrieving, querying, and invocation of

objects. OQL is a version of the Structured Query Language. A object query language that supports complex data types such as multimedia, spatial, compound documents, etc., that are stored as objects. Standard SQL queries can still be used, and the OQL server process converts the objects into relational views. Sanjay

What is an affix On howrse?

An affix is a name you can put on the end of your howrses name.

What is a spreed sheet?

also known as worksheet,it is the primary document used for storing and working data.

How many bytes of memory is a 1Mx64 memory chip?

A 1Mx64-bit memory chip contains <1,048,576> , or <2^20> 64-bit Lwords. You could express this either in terms of MegaBits or MegaBytes. In Megabits, 64Mbits because 1Mx64 = 64Mbits and divide by 8 to get the answer in terms of bytes. You divide by 8 because there are 8 bits in 1 byte. So a 1Mx64-bit memory contains 8 Mbytes, or 64 Mbits. If the width had been 1Mx32-bit, you would have 32Mbits, and 4 Mbytes.

What is the packard bell boot from CD button?

If you need to boot from a CD on a Packard Bell system, you should use the F12 button. This will restart your computer from a disc.

Where is PC in your computer?

PC means 'personal computer'. PC is your computer.

What is meant by editing?

Editing is simple really. To see what I mean, try reading the article. Hope this helps.

Is STDC VERSION is defined as 199901 for primary C99 version?

For the C99 standard, __STDC_VERSION__ is a mandatory macro.

This macro was not specified in ISO/IEC9899:1990 and was specified as 199409L in

ISO/IEC 9899/AMD1:1995 and as 199901L in ISO/IEC9899:1999 for C99. The intention was that this would remain an integer constant of type long int that is increased with each revision of the International Standard.

According to the most current International Standard, ISO/IEC 9899:201x , document N1539, it shall be defined by the implementation to be the integer constant 201ymmL

Wireless network attacks What type of attack is most common?

It would probably be packet sniffing, although you do need to be rather close to your target to do that. My personal weapon of choice for penetration testing I have owner's consent though is a man in the middle attack where I get between the computer and the firewall and tell each one that I am the other to let them send me information. Also from afar most people would just Denial of Service your network which is sending so much information that it can't serve your users.

What is dpll?

Its a algorithm. DPLL/Davis-Putnam-Logemann-Loveland algorithm is a complete, backtracking-based algorithm for deciding the satisfiability of propositional logic formulae in conjunctive normal form, i.e. for solving the CNF-SAT problem.

What is the code for arranging numbers in c language?

That depends on the sorting algorithm you'd like to use. Usually, Quick-sort is good enough for your purposes, but if your application needs to be fast, you might want to read some documents about sorting.

Does inline function increase the code size?

The inline specifier might increase the code size, but it might also reduce it.

It depends on the size of the inlined function versus the overhead of setting up a stack frame and invoking the call/return sequence. Often, the inline specifier is used for very short, usually one line functions, and the intent is to sacrifice a bit of code size for execution size.

Keep in mind that the inline specifier is only a compiler hint, and that the compiler may or may not actually inline the function, depending on context.

What does current artificial intelligence research focus on?

Current AI research focuses on developing computers that use intelligent programming to automate routine human tasks.

What is SAS Programming?

SAS (Statistical Analysis System) is a software suite that can archive, alter, manage and retrieve data from a variety of sources and perform statistical analysis on it. SAS is Build a strong SAS programming foundation to manipulate the data, perform complex queries and simple analyses, and generate reports.

What was the most used computer language?

There is (and always was) only one computer language: binary (also known as machine code).

In order to create machine code programs, programmers use computer programming languages, both low-level and high-level (the level indicating the amount of abstraction between the source code and the resultant machine code). The most-used programming language today is Java, however it is only suitable for applications programming. The most-used general purpose language is C++.

What is the use of keydown in vb?

The keydown event is triggered whenever a user presses a key. Each keydown event has a corresponding keyup event when the user releases the key. Typically you will process the keyup event rather than the keydown event, however you can use the keydown event to capture information about the key being pressed before it is released.

What is the Definition of datums?

a theoretically exact point, axis, or plane derived from the true geometric counterpart of a specified datum feature. A datum is the origin from which the location or geometric characteristics of features of a part are established.

Data transfer or format?

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