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NeXtMidas Training
Macros - Part 1 (Basics)
Procedures and Subroutines
PROCEDURE
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- Writing a
PROCEDURE :
- Procedures are one of the fundamental building blocks of a macro. They allow code to
be written once and then called many times within a macro. A procedure starts with
PROCEDURE and ends with RETURN .
PROCEDURE <name> <parameters>
...
RETURN
- The rules for procedure names are the same as those for command names (starts with
a letter and then can include letters, numbers, or underscores).
PROCEDURE MYPROC <parameters>
...
RETURN
- A procedure can take in a number of parameters which are specified in the same way
that parameters are listed on the
STARTMACRO line.
PROCEDURE MYPROC L:MYNUM[42] T:MYTABLE S:MYSTRING
...
RETURN
- Two important things to note:
- Procedures can not directly return anything (i.e. there is nothing after the
RETURN ).
- Procedures share a common results table with the rest of the macro.
Java Experts Take Note: |
The two primary differences between a PROCEDURE in a Macro and a Java
method are that a PROCEDURE does not return anything and it shares
variable-name-space with the rest of the macro.
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