Changing PM File at Run time

[Anonymous Monk]

Hi Monks,
I have a PM File in which data is stored from the source file that i select at runtime. In run time if i change the file the data is getting updated in the PM file but the updated data is not executed in the application. Only the data that is loaded at first is getting executed. I am using
 require <file name >
Can any one give me a clue on how to do this?

[moritz]

Delete it from %INC, and require it again.

But .pm files aren't the best way to store data. Either use a serialization format like YAML, JSON or CSV or plain text files.

If it has to be a perl script that holds the data, do EXPR or eval might be more appropriate.

[Anonymous Monk]

or even better, embedded perl in a yaml file

[Anonymous Monk]

perldoc -f require

Require will not reload an already loaded file.

[Anonymous Monk]

See tutorial Including files

[tsee]

Check out the Class::Unload module on CPAN. It takes care of almost all the icky details of unloading a module from memory. Afterwards, you can simply reload the module with "require" or "use".

[djp]

Others have told you how to do this, but I have to say this sounds like a Really Bad Idea. Load the data from a file, not from a .pm.

[mrpeabody]

1) You should put the data in a separate file from your source code.

2) You can't ask Perl to automatically update your variables when your data file changes. You have to do it by hand, perhaps on-demand or by checking the file's last-modified time on a regular basis.