Yes to compare two references, use the == operator!
#!/user/bin/perl -w
use strict;

my $x = []; #assigns $x to an anonmyous list 
my $y = []; #assigns $y to an anonmyous list

if ($x == $y) 
{ 
   print "x and y are the same reference *1\n"; 
}
else
{
   print "x and y are NOT the same reference *2\n"; 
}

$y = $x;       #assigns address x to y
if ($x == $y)  
{ 
   print "x and y are NOW the same reference *3\n" 
}
else
{
   print "x and y are different! *4 \n";
}
__END__
PRINTS:
x and y are NOT the same reference *2
x and y are NOW the same reference *3

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In reply to Re: checking reference equality by Marshall
in thread checking reference equality by perl5ever

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