Can *OCCURRENCE(#X-ARRAY) define the X-ARRAY memory space in execution time?

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I was encoding a program and it gave an error in execution time since it called a subroutine and when returning from it I performed a loop for from 1 to 180 consulting by #X-ARRAY(#i), it gave me the NAT1257 but a SENIOR programmer came and solved it with *OCCURRENCE(#X-ARRAY), I did not know that it could be assigned in runtime dimension that way, making the code stay

FOR #J 1 *OCCURRENCE(#X-ARRAY)

For better performance you should change the code a little. Inside the loop *OCC will be executed each time, which is a waste of time, unless you change the size of #X-ARRAY.

Try:

#IX := *OCC(#X-ARRAY)

FOR #J 1 #IX