Difference between revisions of "SET UDFPARMS"

From Recital Documentation Wiki
Jump to: navigation, search
 
(Example)
Line 29: Line 29:
 
changecount(count)
 
changecount(count)
 
? count
 
? count
'''        10'''
+
        10
 
set udfparms to reference
 
set udfparms to reference
 
count = 10
 
count = 10
Line 35: Line 35:
 
changecount(count)
 
changecount(count)
 
? count
 
? count
'''        30'''</pre>
+
        30</pre>
 
+
  
 
==Products==
 
==Products==
 
Recital Database Server, Recital Mirage Server, Recital Terminal Developer
 
Recital Database Server, Recital Mirage Server, Recital Terminal Developer

Revision as of 13:10, 10 March 2009

SET UDFPARMS

Class

Environment


Purpose

Specify whether parameters are passed to a user-defined function by value or by reference


Syntax

SET UDFPARMS TO VALUE | REFERENCE


See Also

DO, FUNCTION, PARAMETER, SET PROCEDURE


Description

By default, parameters are passed to UDFs by value. By setting UDFPARMS to REFERENCE, parameters will be passed to the UDF by reference. Variables that are passed by reference can have their values changed in the UDF, and the new values will be available at the scope where the variables were defined.


Example

set udfparms to value
count = 10
// Call a UDF that changes the value of count to 30
changecount(count)
? count
        10
set udfparms to reference
count = 10
// Call a UDF that changes the value of count to 30
changecount(count)
? count
        30

Products

Recital Database Server, Recital Mirage Server, Recital Terminal Developer