CALL PRXFREE Routine

Frees memory that was allocated for a Perl regular expression.

Category:	Character String Matching
Restriction:	Use with the PRXPARSE function.

Syntax

CALL PRXFREE (regular-expression-id);

Required Argument

regular-expression-id

specifies a numeric variable with a value that is the identification number that is returned by the PRXPARSE function. regular-expression-id is set to missing if the call to the PRXFREE routine occurs without error.

Details

The CALL PRXFREE routine frees unneeded resources that were allocated for a Perl regular expression.

For more information about pattern matching, see Pattern Matching Using Perl Regular Expressions (PRX).

Comparisons

The Perl regular expression (PRX) functions and CALL routines work together to manipulate strings that match patterns. To see a list and short description of these functions and CALL routines, see the Character String Matching category in SAS Functions and CALL Routines by Category.