Or, if 'anonymous' means 'not using a name nor reference', you can change it to 
my @key = map { [qw/A B C D E F G H/]->[$_],
                [qw/7 6 5 4 3 2 1 0/]->[$_]
              } 0 .. 7;

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In such a case, you have to specify the size externally, though, since there is no way how to refer to the arrays.
لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re^2: merging anonymous arrays by choroba
in thread merging anonymous arrays by SavannahLion

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