Zeenyx Software

The Zee language allows classes to be extended. This feature allows the user to add methods and properties to a built-in or user-defined class. To extend a class, use the keyword ‘extend’ as in the following example:

extend class Math

static Number MyNewMethod (Number nValue)

{body of method}

MyNewMethod is now available along with all of the other built-in methods of the Math class. Here are some notes to enhance your understanding of ‘extend’:

• Methods and properties can be added to user-defined or built-in classes.
• Regular and app classes can be extended.
• Properties can only be added for app classes.
• Built-in types that provide methods, like Integer, Enum, Real, String can not be extended.
• Classes can be extended in the same or in different files from the base class being extended.

Extension methods and properties are called like their regular counterparts.