The failure is recognising 'bar' as a scalar rather than a hash and is (i think) nothing to do with 'baz' being a scalar or array.

bar is an unquoted string, baz is an unquoted string.
$foo->{bar} is a scalar, holding a hash reference.
%{ $foo->{bar} } is the hash to which $foo->{bar} is refering.
$foo->{bar}->{baz} is a scalar.

U28geW91IGNhbiBhbGwgcm90MTMgY
W5kIHBhY2soKS4gQnV0IGRvIHlvdS
ByZWNvZ25pc2UgQmFzZTY0IHdoZW4
geW91IHNlZSBpdD8gIC0tIEp1ZXJk

In reply to Re: Re: hash of hashes of lists!!! by Juerd
in thread hash of hashes of lists!!! by costas

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