NAME

       PDL::IO::Storable - helper functions to make PDL usable with serialisation packages

SYNOPSIS

         use Storable;
         use PDL::IO::Storable;
         $hash = {
                   'foo' => 42,
                   'bar' => zeroes(23,45),
                 };
         store $hash, 'perlhash.dat';

         use JSON::MaybeXS;
         $encoder = JSON::MaybeXS->new(allow_tags => 1);
         my $ndarray = xvals (5,2);
         my $encoded_json = $encoder->encode ($ndarray);
         my $decoded_ndarray = $encoder->decode ($encoded_json);

DESCRIPTION

       Serialisation packages such as "Storable", "Sereal", "JSON::MaybeXS" and "CBOR::XS" implement object
       persistence for Perl data structures that can contain arbitrary Perl objects. This module implements the
       relevant methods to be able to store and retrieve ndarrays via "Storable" as well as packages that
       support the Types::Serialiser protocol (currently Sereal, CBOR::XS and JSON packages).

       Note that packages supporting the "Types::Serialiser" protocol need to have their respective flags
       enabled so that the FREEZE and THAW callbacks are used.

       Note also that while JSON::MaybeXS is supported, if it has to fall back to JSON::PP, it will fail.
       JSON::XS treats the data it gets back from "FREEZE" as items to encode, while JSON::PP treats the list it
       gets as strings already encoded. They are fundamentally incompatible, so this module supports the
       JSON::XS option.

       Finally, data flow is not preserved.  If a data structure containing ndarrays connected by data flow is
       serialised then this will need to be explicitly reinstated on deserialisation.

FUNCTIONS

   store
       store an ndarray using Storable

         $x = random 12,10;
         $x->store('myfile');

   freeze
       freeze an ndarray using Storable

         $x = random 12,10;
         $frozen = $x->freeze;

AUTHOR

       Copyright (C) 2013 Dima Kogan <dima@secretsauce.net> Copyright (C) 2002 Christian Soeller
       <c.soeller@auckland.ac.nz> All rights reserved. There is no warranty. You are allowed to redistribute
       this software / documentation under certain conditions. For details, see the file COPYING in the PDL
       distribution. If this file is separated from the PDL distribution, the copyright notice should be
       included in the file.

perl v5.40.0                                       2025-02-04                             PDL::IO::Storable(3pm)