While TMTOWTDI is certainly a feature of Perl, it's unclear exactly what you're attempting to achieve.

Based on what you have written, I tend to agree with AM's comment, perhaps with a small qualification: "... you're probably not using modules correctly ...".

The following points are somewhat simplistic. I'd be happy to expand upon them when you've clarified your intent.

• The most common usage is to load a module at compile time (see use) then access its subroutines as required.
• You can conditionally load a module at compile time using the if pragma.
• You can (conditionally) load a module at runtime using the require function.

If you provide a short piece of code to demonstrate your use case, we'd have a better idea of what you're trying to do. This may lead to a better answer.

I'd also strongly recommend that you Create A New User — this is a very simple process and, unlike other forums, does not require you to provide a lot of personal information. This allows us to differentiate your posts from thousands of other anonymous posts. It also has many benefits for you (non-exhaustive list): search for your own posts; edit your posts; customise your PerlMonks experience; access many features only available to logged in users.

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