|variable||The array subscript to be used to determine the next existing subscript value.|
$NEXT returns the value of the next subscript in the subscripted variable. It can be either a local or global subscripted array element. The value of the rightmost subscript must be a number whose value is -1 or greater. If you are using a naked global reference, the naked indicator must be defined.
$NEXT is an obsolete function that has been superseded by the $ORDER function. It is documented here only for completeness.
Do not use $NEXT in any new code. Use $ORDER in place of $NEXT to retrieve subscripts of an array.
$NEXT and $ORDER
$NEXT is similar to $ORDER. Both return the subscripts of the next sibling in collating order to the specified node. However, $NEXT and $ORDER have different start and failure codes, as follows:
|Starting point||-1||Null string|
|Failure code||-1||Null String|