in reply to Grepping on array
my @arr1 = qw(a b c d e f g h);
my @arr2 = qw(d a e);
my @result = List::Compare->new(\@arr1, \@arr2)->get_Lonly;
# @result = qw(b c f g h);
15 years from now, by which time it will be a completely different language
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