Copying Functions

This chapter explains how to copy existing functions to create new ones. In general, CA 2E allows you to copy a function to another function of the same type. In addition, a copy with a change of function type is permitted between certain combinations of function types. This is called cross-type copying. You can also create new functions by copying customized template functions.

As an alternative to the process discussed in this chapter, you can create versions of functions and messages. Some benefits of using versions are:

• You can test changes on a version of a function or message without interfering with the functionality of the existing model.
• When you finish testing a new version of a function or message and make it active in the model, the original model object remains unchanged and can easily be made active again if needed.
• Only the currently active version of a function or message displays on CA 2E editing panels. As a result, the panels are not cluttered with inactive versions.

For more information about versions, see Working with Versions of Functions and Messages, in Generating and Implementing Applications, in the chapter, "Managing Model Objects."

This section contains the following topics:

Creating a New Function from One That Exists

Cross-Type Copying

Function Templates