>>>>> "JP" == Jeff Pang <pa...@uk2.net> writes:
JP> On Nov 15, 2009, Uri Guttman <u...@stemsystems.com> wrote:
>>>>> "PK" == Parag Kalra <paragka...@gmail.com> writes:
>> and yes, that is declaring a constant. you can tell it is a hash as it
>> is initialized to a hash reference. it makes little sense to me why you
>> would declare such a beast as the reference can have its contents
>> altered and so it really isn't constant. the symbol 'cache_result' can't
>> have its value changed from the initial hash reference.
JP> I would say it's an anonymous hash instead of a hash reference. :)
same thing. you can take and keep a ref to a named hash and if the name
goes out of scope you have an anon hash. these do the same thing:
$href = {} ;
$href = do { my %hash ; \%hash } ;
in both cases you get an anon hash or a hash ref. if you have a ref you
can't tell where it came from unless you scan the entire symbol table
and all accesible lexical pads. and even then it could be anon.
uri
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