Re^2: How to differentiate hash reference and object reference?

in reply to Re: How to differentiate hash reference and object reference?
in thread How to differentiate hash reference and object reference?

No, don't do that. ref is broken:

It fails for certain valid invocants (class names).
It prohibits polymorphism, both in inheritance and interface equivalence.
It returns undef on failure, so you have to go through contortions to avoid undefined value warnings.
It's trivially easy to fool by blessing into a package named HASH.

perlfunc in bleadperl recommends several other techniques for doing the same thing without the problems.

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Re^3: How to differentiate hash reference and object reference? by diotalevi (Canon) on Aug 31, 2005 at 17:46 UTC
You can also fool ref() by blessing your objects into the "\0" package. In that case, you'd get a false value on something that is not only a ref but is even blessed.	[reply]
Re^3: How to differentiate hash reference and object reference? by davis (Vicar) on Aug 31, 2005 at 18:08 UTC
Oh, didn't know that. Thanks! davis Kids, you tried your hardest, and you failed miserably. The lesson is: Never try.	[reply]

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