Hash and Hash Iterator Object Language Elements

PREV Method

Returns the previous value in the underlying hash object.

Applies to:

Hash iterator object

Syntax
Arguments
Details
See Also

Syntax

rc=object.PREV( );

Arguments

rc

specifies whether the method succeeded or failed.

A return code of zero indicates success; a non-zero value indicates failure. If you do not supply a return code variable for the method call and the method fails, then an appropriate error message is written to the log.

object

specifies the name of the hash iterator object.

Details

Use the PREV method iteratively to traverse the hash object and return the data items in reverse key order.

The FIRST method returns the first data item in the hash object. The LAST method returns the last data item in the hash object.

You can use the NEXT method to return the next data item in the hash object.

Note: The PREV method sets the data variable to the value of the data item so that it is available for use after the method call. [cautionend]