FreezeThaw will definitely do the job, you might also want to look into Data::Dumper - especially if you want to manually edit the data while it's in the file. 
print FILE Dumper(%foo);

$bar = <FILE>;
%foo = eval{$bar};

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In reply to Re: Answer: How do I save a nested structure to a file (and read it later)? by Anonymous Monk
in thread How do I save a nested structure to a file (and read it later)? by entropy

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