@a in scalar context just pushes its size onto the stack. $#a in scalar context could be an lvalue or an rvalue, so a 'magic' var is pushed onto the stack that updates the array's size if assigned to. This could probably be optimised when pp_av2arylen is called in rvalue context.

Dave.

In reply to Re^4: Does @{ } copy arrays? by dave_the_m
in thread Does @{ } copy arrays? by tford

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