I suppose the OP was thinking that - due to the @ali = @_ - the entire data structure would be copied...  And the "pass by value" was probably referring to left_triangle(@xx) vs. left_triangle(\@xx) — with the "values" being the array refs.   (Only the OP can tell for sure, though, what his/her expectation had been.)

In reply to Re^3: Pass by Value does not work by almut
in thread Pass by Value does not work by Anonymous Monk

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