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Computer Programming

Computer Programming

Remove the mystery from computer programming by researching eHow’s expert collection of programmer How Tos. Whether looking for a basic overview of various computer programming languages or attempting to bulk up a software engineering resume by improving your Java skills, eHow can help. Neck deep in damaged binary code and need a helpful shortcut? eHow can show you how to switch the values of two variables without using a temporary variable.

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Showing 1-46 of 46 results

  • How to Run VBScript on a Remote Computer

    VBScript can be written in any text-editing software, even Notepad. Learning the fine art of scripting can be beneficial to your job, especially, if you have to repeat the same processes over and...

  • How to Stop an Infinite Loop

    Loops are programming devices that specify that a section of a program is to be performed one or more times. Typically they are divided into two categories, "for loops" and "while loops". A "for...

  • How to use an Oracle PL/SQL Anonymous Block

    Have you ever wanted to remain anonymous for something? Just as people can chose to be anonymous for various things sometimes in the coding language PL/SQL blocks can be anonymous or unnamed. ...

  • How to Read Programing on a Computer

    Without a doubt it can be a significant challenge to understand the programming languages that make computer applications work. However, the good news is that many of the programming languages...

  • How to Input a Number to Two Decimal Places in Visual Basic

    When creating accounting or billing applications, formatting the number to show decimals is part of the process. Visual Basic automatically truncates the zeros that show in numbers after the...

  • How to do Computer Programming

    I am a retired computer programmer. I worked for Insurance companies, and recieved a degree in Computer Science. There are many Programming Languages that are avaiable to the Computer Programmer....

  • Tutorial for Visual Basic Commands

    Visual Basic, like any other programming language, employs special keywords known as commands. Unlike variables, which are named and defined within your code, command names are defined by the...

  • Visual Basic Terms Explained

    Visual Basic is a programming language used mostly for Microsoft Windows applications. Like any programming language, Visual Basic has a distinct syntax. Some basic, popular words are used when...

  • How to Output the Contents of a Variable in PHP

    I am a php programmer and one of the functions that i use the most is var_dump. This will help you to output the contents and information of any variable in your php script. I have found it to be...

  • Introduction to Visual Basic

    Visual Basic is a programming language that is considered one of the easiest to learn for programmers. The language is the closest to natural human language, making the computer "speech" the...

  • MySQL PHP Query Tutorial

    You can use PHP to send queries to a MySQL database. PHP must be configured to use the MySQL client libraries during the installation process. If your web servers support PHP, it most likely has...

  • How to Use a PHP Session Variable to Track a Logged-In User

    PHP Sessions can automatically track a user and drive them to the log-in page if they are not logged in, or drive them to the main page if they go to the login page again. This article describes...

  • How to Create a Fileinputstream

    Using file input stream classes in Java gives the programmer the ability to read files and use them for output or configuration of the application. The "InputStream" file class is simple to use...

  • How to Return the Length of a String in PHP

    PHP, as with all other programming languages has a function where you can obtain the length of a string. This comes in handy when you are validating data such as making sure a user has entered...

  • How to Retrieve the Number of Rows in a MySQL Result Set Using PHP

    There will come a time when you simply want to run a query just to see the number of rows being returned and not necessarily the data. For instance lets say you are trying to see if a username...

  • How to Create Dynamic Web Pages With PHP

    Dynamic web pages are an efficient way to present data to the user. The web designer needs only to create the initial page that splits the data into segments and add data to the database from...

  • How to Write a Switch Statement in PHP

    You could write a series of "IF" statements to drill down through a variable value to act up the condition that you were looking to execute. However the swtich statement is much easier...

  • How to Declare Variables in ActionScript

    ActionScript is the script based language used within Adobe's Flash development software. This scripting language gives developers the ability to make Flash animations more interactive. As with...

  • How to Convert INT to String in Java

    Converting an integer to a string is a common practice when programming. For some application processes, it's necessary to manipulate the format. Java makes converting an integer to a string easy...

  • How to Learn Flash Code

    The language used to program operations in Flash is called ActionScript. This language shares many of the qualities as other programming platforms. Successfully learning to program ActionScript...

  • How to Use OPL

    As computer literacy grows in our society, programming language has ceased to be the sole domain of sophisticated experts, with many casual programmers taking it up as a hobby. Of the many...

  • How to Calculate Week Number in C#

    Date functions are especially tricky in programming Web interfaces. With the amount of Web applications growing, some development involves determining the week number programmatically. This is...

  • How to Use the “Select Case” Statement in Visual Basic.Net

    Just learning Visual Basic.Net or need a refresher on the “Select Case” statement? You’ve come to the right place. This is a very useful command when you need to set define several choices for a...

  • How to Set a Session Variable in PHP

    PHP is a very popular web based CGI programming language that is used to make websites more interactive. A PHP session is where the website developer can store things locally on the web visitors...

  • How to Check Null Value in Java Script

    Using null parameters in Javascript allows programmers to define a variable without assigning a value to it. Null values are used in simple variables like integers and strings, and they are used...

  • How to Write Perl Script

    Perl scripts are very common in the programming world, especially for programs that must manage large amounts of text, such as indexers. Perl scripts can be very easy or very difficult depending...

  • How to Check for Null Value in Visual Basic

    In computer programming languages, "null" means nothing. It is different from any other value, including a blank string that actually contains the space character, and it is different from the...

  • How to Read File Contents into a String in PHP

    PHP provides several methods to use the contents of a file in a script. They all have certain steps in common. These steps are identified as they appear below. If the input file is not already...

  • How to Remove Leading Spaces

    There are many programming languages. Visual basic, SQL and JavaScript use a similar "trim" command that can easily remove leading spaces. Java, C++, C# and several other languages require much...

  • How to Convert String to Integer on Javascript

    When writing programs and working with web pages written with Javascript, it is often useful to convert strings to integers. In fact, when you are getting input from the user, you will nearly...

  • How to Read a User/System Environment Variable Using VBScript

    At times, when programming with vbscript, a programmer will want to read an existing environment variable. This can be accomplished by accessing the Windows Script Host via VBScript and making...

  • How to Use a Switch Statement

    The switch statement is used in programming languages such as C, C++, Javascript and Java. When you desire to code a logical string of checking variable conditions and performing different actions...

  • How to Write a Subroutine in VB.net

    Subroutines give you the ability to write code that can be used over and over again in a program. This saves you time from writing the same code more than once. In this example I am writing a...

  • How to Create a For Loop in C#

    In the C# language, the "for" statement is used to define a block of code that will execute a statement (or a block of statements) as long as a specific condition remains true. This means that, as...

  • How to Create a Dictionary in Python

    In the Python programming language, a dictionary is a data structure that maps unique keys to values. In other programming languages, however, these data structures are known associative arrays...

  • How to Use an Array Class in Javascript

    To some, Javascript is often viewed as a primitive and not particularly useful programming language. However, Javascript is actually a fully object-oriented language that runs in your web...

  • How to Perform a Bit Shift in Java

    The Java programming language allows you to perform bit shift and bitwise operations on the binary numbers that underlie the various data types. Using the bit shift operators, you can perform...

  • How to Perform a Bit Shift in C++

    Programmers can't directly access bits in C++, but C++ does offer the use of bit shift operators for performing certain operations on other data types. Whether you're working with byte, integer or...

  • How to Implement Storage Specifiers in C++

    You can declare a variable in C++ by adding a storage class specifier keyword preceding it. There are five of these keywords: auto, extern, register, static and mutable. Storage class specifiers...

  • How to Use Pointers in C++

    Often, programmers prefer to deal with chunks of data through their memory location instead of directly. C++ pointers are ideal tools for these memory operations. A pointer is a data type that...

  • How to Do Math and Produce Output in Python

    Doing basic math and printing the results is the most basic thing you can do in Python. Once you know how to do arithmetic, assign values to variables and print a result, you can do any...

  • How to Create a For Next Loop in Excel VBA

    The For Next loop is one of the most useful loops in Excel VBA. It allows you to run the same code a specific number of times--and it's easy to learn.

  • How to Create an Input Box in Excel VBA

    There’s no way around it: If you want to add interactivity to your Excel VBA programs, you have to use input boxes. Input boxes request and store data from users--and here's how you create one.

  • How to Write a Simple DB2 Program

    DB2 (short for Database 2) is a database management system used for a wide variety of computing platforms. This programming language is used to access tables rather than flat files. More...

  • How to Debug in Visual C++

    Debugging is the process of finding defects in the source code of a program. Often, it's time-consuming and exhausting. Its efficiency depends largely on the skill of the programmer. However,...

  • How to Create and Destroy Objects

    C++ offers software developers two philosophies for creating and destroying objects--static and dynamic. In restrictive programs objects should be stored in stack memory. Stack or static memory is...

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