lobal Positioning System (GPS) is a world-wide navigational system that can tell you with pinpoint accuracy your exact current location. GPS has been around for many years and has many
n 1853 Francis Guthrie hypothesized that you could color any map with only four colors so no two regions that share a common edge have the same color. It wasn’t
o exploit the performance potential of multicore processors, applications must be threaded for performance. While performance-oriented threading is new for many developers of desktop and laptop systems, there is a
common scenario in many companies, particularly those that create financial or other analytical applications is one where domain experts (for example financial analysts) model calculations they would like the application
hen building a large-scale J2EE/Java EE application, developers have a few options for establishing database (DB) connectivity from EJBs, including handling it transparently using a J2EE data source, or encapsulating
eusable, dynamically linked components are generally a good idea, because they allow you to leverage code and save memory rather than reinvent the wheel. But with thousands of developers leveraging
Suppose that a function normally allocates memory for an object, uses it, and then deallocates the memory. But if the function exits before reaching the end, either because of a
A DataTable can only handle one header for each column. The workaround for this is to use two tables. Generate the first table at the same time as the DataTable
he Java Tutorial is hands-on Java programming language guide that is perfect for any developer looking for a proven path to proficiency with Java SE. This popular tutorial “from the
This tip shows you how to use the fo:page-number and fo:page-number-citation elements to insert page numbers. To insert page numbers in your page’s footer, use fo:static-content: Page [] of []
To retrieve PC or System information (things like the operating system, domain name, logical drives, IP address, or environment variables), use the System class and the Environment class. List of
ualcomm’s support for OpenGL ES makes 3D graphics development for today’s wireless terminals much easier than ever before. With an interface that’s standard across a wide variety of platforms including
egardless of whether you work in C# or VB.NET, or whether you spend more time on the front-end or back-end of an application, the ability to manage data will directly
ut here in the field, there is a popular urban legend: “If your application issues only ANSI standard SQL, then your application is portable.” Many developers actually believe it. Unfortunately
f you’ve done any Windows graphics programming at all, you know about Pens and Brushes. Pens determine the characteristics of lines, such as color and thickness. Brushes determine the characteristics
his is the second in a two-part series that surveys Agile methods and helps readers decide which combination is the most appropriate for their projects. The first part introduced Agile
JavaScript has a built-in function called isNAN that can be used to check if a value is numeric or not. The isNan function returns true if the value is not
This standard library vector can be used like an array. For example: std::vector v(2); // vector of size 2v[0] = 5;v[1] = v[0]; If you’re using an out-of-range index, the
Java allows you to rename a file by using the renameTo(File file) method, in the java.io.File class. First, obtain a reference to the file that you want to rename. Second,
SQL Server offers two date formats for the DATE data type that are considered safe in situations where computer settings differ or when SET DATEFORMAT or SET LANGUAGE are used.
nowing whether a group of form fields have changed and which fields have changed can be beneficial in many ASP.NET Web applications. ASP.NET triggers a “value change” event at the
ne key problem that AJAX addresses is improving Web application user interfaces. By reducing the need to constantly refresh the entire Web page, Atlas helps ensure that your Web application
R1 recently enhanced the standard header with a small reference wrapping library that includes the class template reference_wrapper and the helper functions ref() and cref(). This mini-library library solves the
s we near the fifth anniversary of the Agile Manifesto, the shift from Waterfall software development to Agile methodologies and practices continues to gain momentum. At this year’s Agile 2006
pache Tomcat enjoys the reputation of being a small but very formidable servlet container capable of handling heavy production loads. Its most common role probably is as the application server
arlier this year, Microsoft released a Community Technical Preview (CTP) of its robot-programming SDK, called “Microsoft Robotics Studio,” the result of work done by one of the groups emerging from
t’s crucial to understand the changes to the compilation process from ASP.NET 1.x to ASP.NET 2.0 so you can debug your Web applications effectively. This article shows you how compilation
am the host of “.NET Rocks!”, an Internet audio talk show for .NET developers online at www.dotnetrocks.com and msdn.microsoft.com/dotnetrocks. My co-host Richard Campbell and I interview the movers and shakers
dmittedly, I’m excited about the many new technologies coming out of Microsoft. So excited that I can’t even decide what to play with first! I wrote about this in a
‘m guessing that there’s someone out there (there has to be at least one) who cares how the home theater turned out. (For some of the details, check out the