This does create a temporary hash, but avoids the need to choose a name for the hash:

my @items  = qw( foo bar bar baz quux baz );
my @unique = local(*_) && grep(!$_{$_}++, @items);
print "$_\n" for @unique;

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use Moops; class Cow :rw { has name => (default => 'Ermintrude') }; say Cow->new->name

In reply to Re: keys with an expression by tobyink
in thread keys with an expression by morgon

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