If you compare them using eq or ==, all you're doing is comparing their values as references. And since they're two different objects--ie. not references to the same object--they're two different references. So they won't be equal.

To do a proper object comparison, you'll need to write a method that compares two of your objects. One possibility would be to serialize the objects and compare the serialized strings: 

    my $obj1 = new Obj;
    my $obj2 = new Obj;

    ## The two objects above are now equal, let's say.
    ## Serialize them, then compare the serialized
    ## data.

    use Storable qw/freeze/;
    if (freeze($obj1) eq freeze($obj2)) {
        ## They're the same.
    }

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In fact, you could even use overload to overload the comparison operator so that the proper comparison happens automagically: 
    package Obj;
    use Storable qw/freeze/;
    use overload '==' => \&compare;

    sub compare { return freeze($_[0]) eq freeze($_[1]) }

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Now you can just say: 
    if ($obj1 == $obj2) {
        # They're the same.
    }

[download]

In reply to Re: A simple Comparison by btrott
in thread A simple Comparison by vtprogrammer

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