Question

Convert string to hash

Asked by: adrian_brooks

Hi folks,

I am having some difficulty attempting to convert a string of hashes back into a true hash of hashes. No matter what I have tried, I still somehow get a string returned from the following code.

Any help would be greatly appreciated.

The returned dataset comes back as;

$VAR = '{
                 "thing_1" => 12345678,
                 "thing_2" => 34567890,
                 ....etc etc
}'

Note the single quote surrounding the data...I can't address those hash items until they are converted to a hash.

Thanks all.

~A~

# get_response returns a hash of hashes
my $data = get_response( $URL, $args );
# $data->{_content} is a string value of a JSON dataset
# this line substitutes the : with => to form a hash format
$data->{_content} =~ s/\:/=>/g;
my $lines = eval { $data->{_content} };
warn Dumper($lines);

                                  
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Asked On
2009-09-22 at 14:58:05ID24753228
Tags

perl

,

string

,

hash

,

eval

Topic

Perl Programming Language

Participating Experts
2
Points
500
Comments
3

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Answers

 

by: climbgunksPosted on 2009-09-22 at 22:05:57ID: 25400141


Not really sure what form your input is in... but the folllowing may be what you want.   If your code may have more than just the leading and trailing braces, you'll have to adjust accordingly.

my $var = '{
              "thing_1" => 12345,
              "thing_2" => 34567
            }';
$var =~ y/{}/()/;
my %hash = eval $var;
print "$_ => $hash{$_}\n" foreach (keys %hash);
                                              
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by: marchentPosted on 2009-09-23 at 00:21:56ID: 25400653

You can use this one too.

my $var = '{
              "thing_1" => 12345,
              "thing_2" => 34567
            }';
my %hash = %{ eval $var };
print "$_ => $hash{$_}\n" foreach (keys %hash);

                                              
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by: adrian_brooksPosted on 2009-09-23 at 06:36:56ID: 31632221

Hey guys,

Thanks for the responses. Those were very helpful and appreciated. Both have applicable usage.

~A~

20120131-EE-VQP-002

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