Does the first 1 autovivify the arrayref in $x (as $x->[0] = 1 would) or must $x already have an array ref in it? What happens if I do shift @$x? Is $x->[0] now an alias to $z and the alias to $y disappears? Or (unlikely) does it effectively do @{$x} = @{$x}[1..($#$x-1)] which amounts to 
$y = $z;
$z = $x->[2];
$x->[2] = $x->[3];
....
$x->[$#$x - 1] = $x->[$#$x];
pop @$x;

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Fun and games!

The second example one seems very odd to me. To me, it reads as alias(push(@x, $y)) but I guess perl doesn't parse it as that. Why do this rather than just alias $x[-1] = $y or should that be alias $y = $x[-1]?

So you can use , or = to separate the aliased things? And you can put alias on either side of the =?

Anyway, time for bed. I dreamt about object pascal last night, I hope I don't dream about aliases to night!

In reply to Re^5: RFC: Is there more to alias? by fergal
in thread RFC: Is there more to alias? by xmath

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