| Navigation: Language Reference > 10 - Expressions > Runtime Expression Evaluation >====== PUSHBIND (save runtime expression string name space) ====== |    |
PUSHBIND( [ clearflag ] )
| PUSHBIND | Creates a new scope for subsequent BIND statements. |
| clearflag | An integer constant or variable containing either zero (0) or one (1). When zero, the BIND statement's name space is cleared of all variables and procedures previously bound. When one, all variables and procedures previously bound are left in place. If omitted, the clearflag is zero. |
The PUSHBIND statement creates a new scope for subsequent BIND statements. This scope terminates with the next POPBIND statement. This creates a new scope for subsequent BIND statements, allowing you to create new BIND names for variables with the same name without creating conflicts with the names from a previous scope.
Example:
SomeProc PROCEDURE
OrderNumber LONG
Item LONG
Quantity SHORT
CODE
BIND('OrderNumber',OrderNumber)
BIND('Item',Item)
BIND('Quantity',Quantity)
AnotherProc !Call another procedure
UNBIND('OrderNumber',OrderNumber)
UNBIND('Item',Item)
UNBIND('Quantity',Quantity)
AnotherProc PROCEDURE
OrderNumber LONG
Item LONG
Quantity SHORT
CODE
PUSHBIND !Create new scope for BIND
BIND('OrderNumber',OrderNumber) !Bind variables with same names in new scope
BIND('Item',Item)
BIND('Quantity',Quantity)
!Do some Processing
UNBIND('OrderNumber')
UNBIND('Item')
UNBIND('Quantity')
POPBIND !Restore previous scope for BIND
See Also: