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ABL Reference
ABL Syntax Reference : EXTENT function
 

EXTENT function

This function returns the extent of an array field or variable as an INTEGER value. More specifically, it returns:
*The constant or variable extent value for a field or variable defined as a determinate array
*The Unknown value (?) for a field or variable defined as an unfixed indeterminate array
*The extent for a field or variable defined as a fixed indeterminate array
*Zero for a field or variable that is not an array
Note: The EXTENT function corresponds to the EXTENT attribute.

Syntax

EXTENT ( array )
array
Any array field or variable.

Example

In the following example, the EXTENT function is used to set the limit of a DO loop that cycles through all elements of an array:
r-arrext.p
DEFINE VARIABLE int_value AS INTEGER NO-UNDO EXTENT 3 INITIAL [1, 2, 3].
DEFINE VARIABLE ix        AS INTEGER NO-UNDO .
DEFINE VARIABLE tot     AS INTEGER NO-UNDO LABEL "The total is".

DO ix = 1 TO EXTENT(int_value):
  tot = tot + int_value[ix].
END.

DISPLAY tot.

See also

DEFINE VARIABLE statement, ENTRY function, EXTENT attribute, EXTENT statement