Creating Procedures and Functions

The following topics are covered in this section:

Overview of Procedures and Functions

Defining a Procedure

Defining a Function

Automatic Compilation and Execution

Using Keyword Parameters

Determining if a Keyword is Set

Supplying Values for Missing Keywords

Supplying Values for Missing Arguments

Keyword Inheritance

Entering Procedure Definitions

How IDL Resolves Routines

Parameter Passing Mechanism

Calling Mechanism

Calling Functions/Procedures Indirectly