Basic Characteristics RAPID

IsVar Is Variable
Example
IsVar is used to test whether a data object is a variable or not.
PROC procedure1 (INOUT num parameter1)
IF IsVAR(parameter1) THEN
! For this call reference to a variable
...
ELSEIF IsPers(parameter1) THEN
! For this call reference to a persistent variable
...
ELSE
! Should not happen
EXIT;
ENDIF
ENDPROC
The procedure procedure1 will take different actions, depending on whether the
actual parameter parameter1 is a variable or a persistent variable.
Return value Data type: bool
Arguments
Syntax
TRUE if the tested actual INOUT parameter is a variable.
FALSE if the tested actual INOUT parameter is not a variable.
IsVar (DatObj)
DatObj (Data Object) Data type: any type
The name of the formal INOUT parameter.
IsVar’(’
[ DatObj ’:=’ ] < var or pers (INOUT) of any type > ’)’
A function with a return value of the data type bool.
RAPID Reference Manual 9-IsVar-1