diff between &, &&, and

a.pl

use common::sense;

my ($a,$b) = (0,1);

sub a { say "\ta eh importante"; $a }

sub b { say "\tb eh importante"; $b }

say "& eh importante";
my $c = a & b;

say "&& eh importante";
my $d = a && b;

say "and eh importante"; 
my $e = a and b;

say "-" x 40;
say "a=>$a, b=>$b, a&b=>$c, a&&b=>$d, a and b=>$e";