If $main::session alread holds a reference to a hash, then just assign that value (the reference) to the new variable (do not introduce another level of references):

%main::hash = (one => 1, two => 2, three => 3);
$main::session = \%main::hash;

my $session = $main::session;
print $session->{two};

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In reply to Re: how to take a hash reference from main::, by danger
in thread how to take a hash reference from main::, by rfb

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