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FAQ 4.65 How can I store a multidimensional array in a DBM file?
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FAQ 4.65 How can I store a multidimensional array in a DBM file? PerlFAQ Server 05-26-2008
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Posted by PerlFAQ Server on May 26, 2008, 9:03 pm
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 This is an excerpt from the latest version perlfaq4.pod, which
comes with the standard Perl distribution. These postings aim to
reduce the number of repeated questions as well as allow the community
to review and update the answers. The latest version of the complete
perlfaq is at http://faq.perl.org .

--------------------------------------------------------------------

4.65: How can I store a multidimensional array in a DBM file?

Either stringify the structure yourself (no fun), or else get the MLDBM
(which uses Data::Dumper) module from CPAN and layer it on top of either
DB_File or GDBM_File.



--------------------------------------------------------------------

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are not necessarily experts in every domain where Perl might show up,
so please include as much information as possible and relevant in any
corrections. The perlfaq-workers also don't have access to every
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Working code is greatly appreciated.

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Posted by szr on May 27, 2008, 12:35 am
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 PerlFAQ Server wrote:
[...]
> 4.65: How can I store a multidimensional array in a DBM file?
>
> Either stringify the structure yourself (no fun), or else get the
> MLDBM (which uses Data::Dumper) module from CPAN and layer it on
> top of either DB_File or GDBM_File.

It may be worth mentioning, that while Data::Dumper can work well,
sometimes it maybe be useful to use a module such as PHP::Serialization
if you are sharing data with a language (like PHP) that support that
type of serialization.

--
szr



Posted by brian d foy on May 27, 2008, 4:30 am
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wrote:

> PerlFAQ Server wrote:
> [...]
> > 4.65: How can I store a multidimensional array in a DBM file?
> >
> > Either stringify the structure yourself (no fun), or else get the
> > MLDBM (which uses Data::Dumper) module from CPAN and layer it on
> > top of either DB_File or GDBM_File.
>
> It may be worth mentioning, that while Data::Dumper can work well,
> sometimes it maybe be useful to use a module such as PHP::Serialization
> if you are sharing data with a language (like PHP) that support that
> type of serialization.

Interesting suggestion, but I don't want to turn the answer into a
catalog of serialization modules (especially when the question is not
really about anything other than DBM). The question mostly exists
because some of the DBM implementations are quite limited in handling
data so you have to ask those sorts of questions. :)

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