declaring a hash table in one file and using it in another in Perl

Question

I need to create a hash table in one file and use in in another. The reason for it is that that the table is my \"database\" and will be changed, and I want it to seat with

Answer 1

This is likely not be the best solution, but you could just use Storable or Data::Dumper, both of which are in the core since forever (5.7.3 and 5.5, respectively).

Alternatively, you could put them in another module and use/require that, ala

package MyImportantHash;

use Exporter;

our @EXPORT = qw( %important_hash );

our %important_hash = (
              some_key  => 'some_value',
         );

1;

And in your main package,

use MyImportantHash;
say "$_ => $important_hash{$_}" for sort keys %important_hash;

Of course, this all assumes that you don't want changes in the hash while in-memory to automatically show up in the file. If you do, look no further than davorg's answer.