How do I read back in the output of Data::Dumper?

Question

Let\'s say I have a text file created using Data::Dumper, along the lines of:

my $x = [ { foo => \'bar\', asdf => undef }, 0, -4, [ [] ] ];

Answer 1

This works fine for me:

Writing out:

open(my $C, qw{>}, $userdatafile) or croak "$userdatafile: $!";
use Data::Dumper;
print $C Data::Dumper->Dump([\%document], [qw(*document)]);
close($C) || croak "$userdatafile: $!";

Reading in:

open(my $C, qw{<}, $userdatafile) or croak "$userdatafile: $!";
local $/ = $/;
my $str = <$C>;
close($C) || croak "$userdatafile: $!";
eval { $str };
croak $@ if $@;