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Since 1998, DevX has helped people start businesses, build websites, and provide enterprise technology to people globally. Interviewing the likes of Microsoft’s co-founder, Steve Ballmer, the publication brings comprehensive, reliable, and accessible insights to the Internet.
This code shows you how to calculate the angle between two lines using vectors and an inverse cosine function: Public Function getAngleBetweenLinesVect(commonX As Single, commonY As Single, X1 As Single,
It’s common to want to assign several styles to an element. Normally, you’d do that this way: obj.style.position = ‘absolute’;obj.style.top = ‘0px’;obj.style.left = ‘0px’;… etc … However, there’s a way
This utility tool logs the information when you build the assembly and is packaged along with the .NET Framework Tools. It allows you to view all the assembly bindings in
Suppose you want to place your cursor in a text field at a desired position. Your text field has a display size of 20 characters and a data size of
okia reports that STL support has been one of the most requested features among Symbian developers. This is no surprise. In 2006, using C++ without STL is like driving a
ne of the most useful features of the Microsoft Enterprise Library is its adaptability; all the application blocks are fully extensible. Like ASP.NET itself, Enterprise Library implements a pluggable architecture
icrosoft has recently launched the Windows Mobile 5.0 platform for Pocket PCs and Smartphones. With the proliferation of Windows Mobile-based devices in the marketplace, companies are gradually mobilizing their enterprising
ost Windows users are familiar with tool tips?the little “balloon” that pops up when you position your mouse over an icon. Tool tips are very useful user interface (UI) enhancements
Many object-oriented programming languages allow a constructor to delegate its object initialization to another constructor of the same class. But in C++98, this isn’t permitted. Consequently, a C++ class with
n April 6 of this year, Microsoft announced that SQL Server Mobile Edition (SQL Server Mobile) would be replaced later this year with Microsoft SQL Server 2005 Everywhere Edition (SQL
synchronous JavaScript and XML (AJAX ) is a term for the process of transferring data between a client script and the server. The advantage of this is that it provides
n September 19th, 2006, Python enthusiasts were rewarded with a new version. Python 2.5 continues the honorable tradition of improving and enhancing the language carefully while extending its impressive standard
DO.NET provides many rich features that you can use to retrieve data from data sources in a number of ways, but with that flexibility developers sometimes end up tightly coupling
ou know SQL Server 2005’s new snapshot isolation feature can help you reduce lock contention and deadlocks, but did you know that it also can help you fix intermittent errors
‘m sure by now you’ve read more than your share of books and articles describing new ASP.NET 2.0 features. Master pages, themes, providers, etc., are all great, but have you
The proxy pattern can be used in situations where multiple copies of a complex object must exist. In order to reduce the application’s memory footprint in these situations, you create
If you’ve ever wanted to know how something in the .NET Framework does what it does, check out .NET Reflector. This awesome utility will reverse engineer compiled .NET dlls back
JavaScript does not allow you to set the page orientation so you can print in Landscape mode. To workaround this limitation, simply add the following code to the … part
lthough originally envisaged as a product for use in Windows Forms (executable) applications, Enterprise Library is proving popular with Web application developers as well. For example, the Data Access Application
emoting is an essential component of enterprise distributed computing. A service or class you call from within the same server (Java virtual machine) doesn’t need to be exposed as a
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 []
