Difference between revisions of "SET UDFPARMS"
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changecount(count) | changecount(count) | ||
? count | ? count | ||
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set udfparms to reference | set udfparms to reference | ||
count = 10 | count = 10 | ||
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changecount(count) | changecount(count) | ||
? count | ? count | ||
| − | + | 30</pre> | |
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==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
Contents
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
