$lcm=List::Compare=>new(\

List::Compare->new() (note arrow operator, not fat comma) expects a list of ARRAY refs as its arguments. I don't know enough about your algorithm to write the exact code for you, but it looks like, for example, $HoAncestors{$taxid} is just such an ARRAY ref, so just send it straight to List::Compare->new($HoAncestors{$taxid}, ...), filling in the ... with as many other ARRAY refs as you want to include in the same comparison (i.e., the ones you wish to calculate the intersection of).

use 5.012;
use warnings;

use List::Compare;

my %hash = (
    a => [ qw/foo bar baz for/ ],
    b => [ qw/bar bells are for tough guys/ ],
    c => [ qw/belly up to the bar for beer/ ],
    d => [ qw/d is not used for comparison/ ],
);

my $lc = List::Compare->new($hash{a}, $hash{b}, $hash{c});
# my $lc = List::Compare->new(@hash{ qw/a b c/ }); # Or with hash slic
+e

my @intersection = $lc->get_intersection;
say "@intersection";

[download]

Output:

bar for

[download]

In reply to Re: Passing List::Compare a list of arrays by rjt
in thread Passing List::Compare a list of arrays by AWallBuilder

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