Use the repetition operator: 

my $i = 1;

my %hash = (
    ('abc' => 7) x (! $i),
    'hk' => 5,
    'jk' => 6
);

my %other_hash = (
    ('abc' => 7) x (!! $i),
    'hk' => 5,
    'jk' => 6
);

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In reply to Re: Initializing a hash using conditions by stvn_skuo
in thread Initializing a hash using conditions by Anonymous Monk

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