package All_In;

use strict;
use warnings;


sub new {
    my $class = shift;

    my $self = [];

    for my $aref (@_) {
        my %h;
        @h{ @$aref } = ();
        push @$self, \%h;
    }

    bless $self, $class;
}

sub qualify {
    my $self = shift;

    for my $href (@$self) {
        return 0 if ! grep { exists $href->{$_} } @_;
    }
    return 1;
}

1;