Storable under Win XP?

FrankHaas has asked for the wisdom of the Perl Monks concerning the following question:

Greetings Monks,

I'm trying to use Storable under Win XP with ActiveState Perl 5.8.8. I'm getting an error which says:

D:\Frank\tdump>perl p1.pl
Cannot restore overloading on SCALAR(0x1c0d3b0) (package PDL) (even af
+ter a "require PDL;") at ..\..\lib\Storable.pm (autosplit into ..\..\
+lib\auto\Storable\_retrieve.al) line 380, at p1access.pm line 53
[download]

I've reinstalled PDL 2.4.3 but that didn't help. My user code where it fails is this function:


sub my_retrieve {
    my $File = $_[0];
    my $arrayref = retrieve("$File");

    return @{$arrayref};    
}
[download]

What am I doing wrong here?

Thanks in advance!

Regards

Frank

Comment on Storable under Win XP? Select or Download Code

Replies are listed 'Best First'.
Re: Storable under Win XP? by Corion (Patriarch) on Jan 08, 2008 at 15:23 UTC
I'm not sure whether you can store any PDL object via Storable at all - PDL has many parts written in XS (that is, C), which are invisible to Storable, and unless the PDL modules implement the appropriate Storable hooks, those C parts will remain invisible to Storable. But then, I've never used PDL and not much of Storable, so it might be that the two are supposed to work together. A different approach might be to use Data::Dumper instead, but that one will make the size of your data grow very large while dumping it.	[reply]
Re^2: Storable under Win XP? by FrankHaas (Initiate) on Jan 08, 2008 at 16:03 UTC
Thanks, just realized I wasn't clear enough - I don't want to use PDL, just Storable but it looks as if Storable requires PDL, i.e. when I remove PDL and try it again I'm getting: `D:\Frank\tdump>perl p1.pl Can't locate PDL.pm in @INC (@INC contains: C:/Perl/site/lib C:/Perl/l +ib .) at ..\..\lib\Storable.pm (autosplit into ..\..\lib\auto\Storabl +e\_retrieve.al) line 380. BEGIN failed--compilation aborted, at p1access.pm line 60` [download] Thanks again! Regards Frank	[reply] [d/l]
Re^3: Storable under Win XP? by bart (Canon) on Jan 08, 2008 at 16:40 UTC
No... I think the file you're trying to load using Storable requires PDL. Storable works fine without PDL all by itself. Try to save a data structure you created yourself, first, and load that.	[reply]
Re: Storable under Win XP? by moklevat (Priest) on Jan 08, 2008 at 16:04 UTC
There are a couple of modules designed to help with this, but unfortunately neither seems to be available as a ppm for ActiveState under Win32 (assuming you are using ActiveState). Both PDL::IO::Storable and PDL::NetCDF could help accomplish your aims. Though according to the docs for PDL::IO::Storable, if you plan to use the stored piddles across platforms, you may be better off using PDL::NetCDF. Initially, it looked like an ActivePerl ppm for PDL::NetCDF was available from Randy Kobe's ppm repository, but the link to NetCDF on that page goes nowhere. From Trouchelle it looks like the 0.93 build failed. So, I guess this is helpful only if you can build your own.	[reply]
Re^2: Storable under Win XP? by gokuraku (Monk) on Jan 08, 2008 at 18:35 UTC
Would using CPAN on Windows help out any there? I had forgotten, but you can use "perl -MCPAN -e shell" on Windows and add/configure modules.	[reply]


No such thing as a small change
	PerlMonks