It was one way to do it. The goal was to keep @path with only "pure" node information
That's unrelated. I was referring to $#a=...; push @a,...;. The first statement sets the size of the array. Then next changes it. Why not just set it to the right size right from the start.
Me too. But a data structure outside the loop was needed to oversee things.
eh? What global data structure? I was referring $1 and $2. The only other global is DATA.
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