[plt-scheme] a single module split across several files

From: Jens Axel Soegaard (jensaxel at soegaard.net)
Date: Fri Nov 21 14:02:16 EST 2008

Daniel Roy skrev:
> I have a question about using modules/units and physical code 
> organization.
> Simply put:  can I split a single module across several files so its 
> easier to work with? 
> More details: We had been using the Pretty Big language and (load ...) 
> commands to piece together a number of files totaling roughly 14,000 
> lines.  I've recently moved the code into the modules framework (which 
> seems to be necessary in order to get debugging across multiple files 
> and other more advanced functionality to work in DrScheme).  However, 
> in the process, I had to (naively) concatenate a number of files 
> together as they referenced each other.  If they were separate 
> modules, they would have had cyclic dependencies.  That said, they 
> aren't really cyclic -- they really are a single module.  
> Unfortunately it's also 6000 lines of code.  Using (load ...) doesn't 
> work (at least my naive attempts at using load didn't work).   
> Now, undoubtedly there is some re-factoring that could be done to 
> identify reusable and generic components that I could separate out as 
> other modules and reduce this file to a manageable size.   But this is 
> a research project not a software development one and the form and 
> structure of the code is subject to radical changes.  Can I get the 
> benefit of modules (better optimization? debugging? etc?) without 
> being forced to move dependent code into the same physical file?

Yes, use include:


But most likely your files already contain closely related functions 
that ought to be in their
own module (if nothing else, to make the code clearer).

Jens Axel Søgaard

Posted on the users mailing list.