Understanding Programming

View:  
Sorted by:  

Writing a WebLogic Startup Script

One of the most common ways to start WebLogic Server is by using a startup script. A startup script is nothing more than an ordered list of commands that would normally be issued at the Windows or UNIX [more…]

Creating Web Services in WebLogic

A web service is a remote procedure available to clients through TCP/IP, typically using HTTP or SMTP as the transport and XML for encoding. The web service is described using standard XML notation called [more…]

Four Steps to Take before Writing a Computer Program

Before you start writing a computer program, first take four critical steps to design it. By doing so, you don't waste time writing a computer program that doesn't work or that solves the wrong problem [more…]

How Does a Computer Program Work?

Computers don't do anything without someone telling them what to do, much like the average teenager. To make the computer do something useful, you must give it instructions in either of the following two [more…]

The Technical Details of Writing a Program

Few people create programs overnight. Instead, most programs evolve over time. Because the process of actually typing programming commands can prove so tedious, time-consuming, and error-prone, programmers [more…]

Making Generalizations in UML 2

It's natural to classify objects in categories and to organize categories into subcategories. If you look for a place to live, you find yourself categorizing a dwelling unit as a house, apartment, townhouse [more…]

Understanding Observer Patterns

The Observer design pattern lets several observer objects be notified when a subject object is changed in some way. Each observer registers with the subject, and when a change occurs, the subject notifies [more…]

The Life Cycle of a Typical Computer Program

Few programs are written, released, and left alone. Instead, programs tend to go through various cycles where they get updated continuously so companies can sell the newer versions to new and existing [more…]

Diagramming an Interaction Scenario in UML 2

All interaction diagrams capture at least one interaction, which is the interplay of messages sent between objects over time for a specific purpose. Usually the most important interactions you document [more…]

Appreciating the Power of UML 2

Building systems or software isn't that tough if you can communicate with your clients, co-workers, managers, and tools. Unfortunately, as your problems become harder and more complex, the risks that emerge [more…]

Survival Skills for WebLogic Developers

As a WebLogic developer, it's important to know how to structure your applications and development environment. You must also know how to reach out to the WebLogic community when you run into problems. [more…]

The Real Difference between Integers and Floating-Point Values

If a floating-point value can also be a whole number, why bother using integers in your programs at all? The reason is that floating-point values and integers are handled differently inside the computer [more…]

The Different Lines in UML 2

Lines connect nodes to complete the meaning of your UML diagrams. Spice up a UML recipe to delight developers by using these zesty lines that connect UML's basic ingredients: [more…]

UML 2 Node Basics

Nodes are the nuts and bolts of your UML diagrams. Your development projects can be enhanced by using each node's symbol form to add rich texture. This table shows you the basic parts that can be combined [more…]

Computer Programming Branching Statements

Most programming languages can make decisions based on the data you provide. Instead of performing the same tasks the same number of times, branching statements create a program that reads your data and [more…]

Computer Programming Looping Statements

Programs can automatically repeat subroutines and subprograms based on these looping statements. They can repeat a number of times, count a set of items and repeat for each item, or repeat as long as an [more…]

Programming Compilers and Interpreters

Programming requires special tools to convert your written program to the technical language that your computer understands. Depending on the programming language, you need either a compiler or an interpreter [more…]

Beginning Programming All-In-One For Dummies Cheat Sheet

If you're just getting started writing computer programs, you need to learn programming branching and looping statements to perform the specific jobs you need for an effective program. Keeping a list of [more…]

Oracle PL/SQL Syntax Examples

After all the parts are in place and you've established the Oracle environment, you can start working with PL/SQL. Study this chart, which shows some basic PL/SQL syntax you need to know to control what [more…]

Oracle PL/SQL Code Samples

When programming PL/SQL, you want to structure the code so that it does what it is supposed to and, if changes are necessary, you can easily see where they’re needed. After all, your goal is well-written [more…]

Before You Write Your Program

The page you are looking for was recently moved. Don't worry, it's still here; it just has a new address: http://www.dummies.com/how-to/content/four-steps-to-take-before-writing-computer-program.html [more…]

Subsetting R Objects

Vectors, lists, and data frames play an important role in representing data in R, so being able to succinctly and correctly specify a subset of your data is important. [more…]

Importing Data into R

R has many functions that allow you to import data from other applications. The following table lists some of the useful text import functions, what they do, and examples of how to use them. [more…]

Getting Help with R

Even with good introductory books on R, you’ll need to use the R Help files. The R Help files provide detailed information about the use of different functions and their peculiarities. R has excellent [more…]

R For Dummies Cheat Sheet (UK Edition)

R is more than just a statistical programming language. It’s also a powerful tool for all kinds of data processing and manipulation, used by a community of programmers and users, academics and practitioners [more…]

Listings:1-2526-30

Sign Up for RSS Feeds

Computers & Software
Win $500. Easy. Enter to win now.

Inside Dummies.com

Dummies.com Sweepstakes

Win $500. Easy.