forget about the Schwartzian transform and use Sort::Key: 
use Sort::Key::Maker sn_keysort => qw(str num);
my @sortedarry = sn_keysort { (split /\t/)[8, 21] } @foo;

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In reply to Re: schwartzian transform and sorting on two columns by salva
in thread schwartzian transform and sorting on two columns by indapa

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