Constructor that accepts arguments is known as parameterized constructor There may be situations, where it is necessary to initialize various data members of different objects with different values when they are created. Parameterized constructors help in doing that task.

• Implementation inheritance r f rs to the ability to use a base class's properties and methods with no additional coding.

• Interface inheritance refers to the ability to use just the names of the properties and methods, but the child class must provi e the implementation.

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To implementing a multilingual user interface, you design the user interface to open in the default UI language and offer the option to change to other languages. Globalization is the first step in the process. A globalized application supports localized user interfaces and regional data for all users....

Programs must be declared before they can be used. PL/SQL supports mutual recursion, in which program A calls program B, whereupon program B calls program A. To implement this mutual recursion, you must use a forward declaration of the programs. This technique declares a program in advance of the program...

PL/SQL allows you to define two or more programs with the same name within any declaration section, including a package specification or body. This is called overloading. If two or more programs have the same name, they must be different in some other way so that the compiler can determine which program...

The Math.cos() method accepts one argument, the angle of a triangle. It returns the cosine of that value, which must be specified in radians. The following statement prints –1:

document.write(Math.cos(Math.PI))

Since WCF web endpoints are opened via HTTP, you can call them from JavaScript inside a browser without any modification on the service side. The endpoints provide URI-accessible functionality, so accessing them from an Ajax application is simply a matter of making the right calls using JavaScript (or...

The MVC architecture gives you a great start in making your application maintainable and testable, because you naturally separate different application concerns into different, independent software pieces. Yet the ASP.NET MVC designers didn’t stop there. To support unit testing, they took the framework’s...

Use the REMOVE procedure to remove a job from the queue. If the job has started execution, you cannot remove it from the queue. The specification is:...

Boolean values, also called logical values, are basically true or false. They are usually used in conditional expressions and statements. If you are familiar with C++, you probably recognize these terms as 1 and 0, 1 representing true and 0 representing false. JavaScript officially uses the true and...

Time delay loops are often used in programs. These are loops that have no other purpose than to kill time. Delay loops can be created by specifying an empty target statement. For example:




This loop increments x one thousand times, but does nothing else. The semicolon...

The C++ language has long been a stronghold for Windows services development. This will not change with C++/CLI. In fact, I predict that some of the defection to C# in this area may return because of the power of C++/CLI. In this chapter, you will see just how easy it is to create Windows services using...

Java does not have pointers but instead has nonprimitive variables that are references. Java avoids much of the direct programmer management of memory that causes so many bugs in C and C++. Java does have arrays, which are reference types. Java does not have functions that are outside the scope of a...

Arrays can be initialized by a comma-separated list of expressions enclosed in braces:



When the list of initializers is shorter than the size of the array, the remaining elements are initialized to 0. If uninitialized, external and static arrays are automatically initialized...

Because of the duality between points and lines in the projective plane, most of the data and code we use to represent these concepts in C++ are the same. If at all possible, we should avoid writing the same code twice for two reasons. First, the initial work in creating the programs is doubled. More...