In many frameworks and software projects, all classes are enforced to be descendants of one common generic class, usually named Object. This design policy prevails in other OO language such
A reference is always bound to the same object. When that object is destroyed, any use of its reference yields undefined behavior. The following example may demonstrate that: int &
If you don’t want users of your class to be able to assign objects of its type (password string objects are a good example), you can declare a private assignment
A class containing no data members and no member functions is an empty class. It’s defined like this: class PlaceHolder {}; What’s it good for? It can serve as a
For the two major browsers, the easiest way to invoke a JavaScript function is create a java.net.URL instance using the JavaScript: protocol handler. To invoke the JavaScript command, pass the
Unlike the Windows 95 common controls, the standard list box doesn’t have a horizontal scrollbar when list items are too wide to fit within the list box. Fortunately, it’s not
Setting an element in an array of option buttons to True is easy. Click on the option button, or use this code: OptionArray(ThisOne) = True ThisOne is the Index of
The Java core API includes a class called java.lang.System from which system dependent operations can be performed. One of the methods of the System class is getProperty(String) which will return
Use Private variables in BAS modules to protect data that the module’s routines must access, but which should be hidden from the rest of the application: Dim hidden_data As IntegerFunction