There are two arrays ( one inside the other ). The outer array is the anonymous array as shown below: 


sub2( [ sub1() ] );
      ^  ^
      |  | 
      |  --------- Inner array 
      ------------ Outer array

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sub 2 now gets the ref of the outer anonymous array which is flattened.

In reply to Re^4: on the fly reference to subroutine output by tmharish
in thread on the fly reference to subroutine output by ISAI student

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