Just one more question. What about $x{@y}?

You tell us? Try It To See? Tutorials: Basic debugging checklist?

I don't know what this means, do you have any idea?

$ perl -MData::Dump -e " @x = 1..2; $y{@x} = @x; dd \%y "
{ 2 => 2 }

$ perl -MData::Dump -e " @x = 1..4; $y{@x} = @x; dd \%y "
{ 4 => 4 }
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