Loop through hash reference

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

Hi Monks, I'm trying to loop through a hash reference, it's something to do with it not accepting a hash reference, I get this error and I can't figure out how to workaround it: Using a hash as a reference is deprecated at test.pl line 636. Type of arg 1 to each must be hash (not hash element) at scroll.pl line 636, near "})" Execution of test.pl aborted due to compilation errors. The hash reference has the structure: $config->{ 'DATA' }->( 'different keys' } = value; Here is the code:

while (($key, $value) = each(%$config->{ 'DATA' })) {
                  
                     }
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Thanks!

Comment on Loop through hash reference Download Code

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Re: Loop through hash reference by moritz (Cardinal) on Mar 12, 2009 at 08:43 UTC
Try `%{$config->{ 'DATA' }}` instead. See also perlreftut, References Quick Reference	[reply] [d/l]
Re: Loop through hash reference by planetscape (Chancellor) on Mar 12, 2009 at 11:16 UTC
For more general cases, I like using something like Re: I've got a hash of hashes how do i get my values out, which can handle arbitrarily complex structs. You may also wish to have a look at References and How can I visualize my complex data structure?. HTH, planetscape	[reply]