class Mysingleton{ private Mysingleton objsingleton = null; private Mysingleton() { } //single way to get its instance. public Mysingleton getInstance() { if(objsingleton == null) { objsingleton = new Mysingleton(); }
Use this code: if object_id(‘tblTemp’)0 drop table tblTempCreate Table tblTemp (Field1 varchar(5),Field2 Varchar(100))insert into tblTempselect ‘C1’ Field1, ‘Value1,Value2’ Field2Unionselect ‘C2’ Field1, ‘Value3,Value4’ Field2 if object_id(‘tblTempOutPut’)0 drop table tblTempOutPutselect * into
nce upon a not-long-ago, Web services were the future killer application that you just had to have a grasp on. While they are a very important part of most architectures
odeling, and especially UML, is becoming more and more important in software development. After you’ve participated in a number of software projects, you will realize that developers use models in
Suppose you want to put the contents of a page right up against the edges of the browser’s viewport. While you can force this using absolute positioning, there is a
Sometimes you need to encrypt certain data stored in your database?data like passwords and other condfidential information. Oracle Obfuscation is a technique in which data is encrypted or decrypted using
n an article published last week on DevX entitled “Why EDI Must Die“, the author, Jeremy Jones, gives several reasons why he believes XML is superior to the X12 format
nce upon a time building a Web front to a store was an enormous task, involving expensive specialists. However, over time, technologies have developed that allow anybody to build their
any developers seek sophisticated third-party alternatives. In this article, I’ll present a set of classes for the DataGrid to help address some of the more common struggles. Although third-party tools
n all the excitement about SQL Server 2005 (formerly codenamed Yukon), most people tend to focus on the .NET integration. But the native support for XML might turn out to
icrosoft recently launched the Microsoft Patterns and Practices section of their Web site, offering several complete architectural and design application blocks, complete with source code, that you can use in
avigational menus are an obvious requirement for many Web applications, used in nearly every multi-page site, from family sites to multinational e-commerce systems. Until now, developers have relied on third
he Python language has a few characteristics that make it great for unit testing: It integrates very well with the platform it runs on, so you can write tests that
view is a great UI concept for IDEs that enables developers to encapsulate a set of functionality. It is typically used in a “non-model” fashion, meaning the functionality is visible
lectronic Data Interchange (EDI), a data format used for inter-business messaging, has been partially responsible for reducing costs and increasing productivity in the manufacturing and services industries. Over the years,
As you know, integer data in SQL Server is shown without a thousands separator. But sometimes you want that comma every three digits. The following is a simple conversion that
The following code draws a rectangle around the toolbar button when a user moves their mouse over it. This looks better if the Appearance property of the toolbar is set
In Java, File.list() lists all the files in a directory. However, rather than listing all the files and then discarding unnecessary files in your code, this tip will show you
The ostream_iterator() is useful for reading the elements of a container to the standard output or to a file. However, because this iterator works in conjunction with STL algorithms, it
ou could create a new Windows Forms application using a default form. Then you could add several controls, a lot of code to instantiate your objects and call methods, and
ost Flash tutorials you’ve looked at are tool-centric, focusing on Flash’s individual features and how to use them (an approach that can quickly become tedious), whereas this innovative, engaging, and
You can use the count_if() algorithm to count the number of elements in a container based on any condition. count_if() takes three arguments. The first and second argument areinput iterators
teganography, literally “hidden writing,” is nowadays most often associated with embedding data in some form of electronic media. Data is hidden by adding or altering insignificant bits of information of
n this article, I’ll explain how the Data Sources Window in Visual Studio 2005 will enable you to extend the list of controls supported for Drag Once Databinding. I’ll show
distinguishing factor of J2ME over browser-based approaches is the ability to store data on the device. This allows networked applications to be useful even in the absence of a network
toring and retrieving information for most applications usually involves some form of interaction with a relational database. This has presented a fundamental problem for developers for quite some time since
ybase’s DataWindow .NET provides a powerful tool for creating data driven applications with capabilities far beyond the native DataGrid. With it, you can develop flexible, high performance, visually appealing applications
eneric containers and algorithms often impose certain restrictions on the objects that they manipulate. For example, the std::sort() algorithm requires that the elements on which it operates shall define the
To open only one instance of a popup window in an HTML page, use the windowName parameter of the window.open method. For example window.open(‘http://www.devx.com’) will open a new window each
This code allows you to format a textbox string to the correct currency in SQL Server, independent of regional settings or the user input decimal symbol: Public Function FormatMoney(ByVal strValue