Hello everybody, I am currently struggling about how are we supposed to implement persistent variables in perl.

Let me clarify myself;

I have a Module which handle the users data, it contain a memberlist variable which is initially undefined.

My goal is to populate the list variable only once by reading a file.

The flow should theoretically be as follow :

• - Load Package
• - Members file is read and array @MemberList is populated
• - Execute scripts using MyPackage
• - Request @MemberList from MyPackage (return the var)
• - Update @Memberlist from MyPackage (add new item, save file)

My current tests shows that the variable either get unloaded after being populated from inside the package, or it always read the file to fetch the variables.

How am I supposed to implement this? I thought the code within package was only run at compile time unless it was within a sub.

I would still consider myself as a beginner when it come to server-side/perl programming, so don't hesitate to point out any flaws that would occur from using this kind of flow in a real-world case.

On a side note, if you have open source code that you strongly recommend studying available anywhere, please let me know. I used to read a lots about YABB Forum code but the more I read about it, the more I realize that the code is not strong / very efficient.

Thanks

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Update

After further testing with the singleton patterns (Thanks McA) and my previous implementation, I have realized that the problem does not really reside in the semantics but in the way the perl software works

After a script has been executed, all the packages are unloaded from memory. Is there any way of making sure a package remain alive?

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