in reply to Re^3: Difference between two arrays - is there a better way?
in thread Difference between two arrays - is there a better way?
That's certainly wins for brevity and works a treat but it would seem the smartmatch op is (still) considered deprecated/experimental:
https://metacpan.org/pod/release/RJBS/perl-5.18.0/pod/perldelta.pod#The-smartmatch-family-of-features-are-now-experimental-Simon
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