LispForum

Natively, there is nothing like type safety when calling C code. That's why each piece of C code that needs to use a shared library (for instance dll) needs the header file with the function definitions and type definitions. No such information is exported from the shared library; only the entry-poi...

Thanks for your responses. It's generally not desirable to have a function returning the location of the executable, because this opens the door and invites all virii of the internet to manipulate the executable. I don't understand what you mean with this. Any Windows executable can get its own loca...

Thanks for the responses! I played around with it a bit and I think I'll be using the late binding suggestion, which seems most elegant to me.

Dear Lispers, I'm having problems 'properly' using defparameter (or defvar or defconstant) in my code. Occasionally I find myself trying to code something like: (defparameter *functions* `((label1 . ,#'function1) (label2 ,#'other-function))) (defun function1 (something) ...) (defun other-function ()...

Thanks for your reply. I'll try out *load-truename* as soon as I can. I am very curious if it is properly bound when using an executable created with saveinitmem.

I managed to test it on Windows and you are right. All the described methods return the same thing: the current working directory. I've given up on getting the executable's directory for now, I'll just have to ensure the current working directory is properly set. I've now stumbled upon a new problem...

Thanks for your reply Edgar. Unfortunately, those both use the current working directory when the program starts, which (at least on Windows) is highly unpredictable and not a reliable method. If in the command line the user uses the following two ways to open the program, the results would differ: ...

This is a late reply, but just wanted to add one remark that you might find handy later on: Common Lisp is actually case-sensitive at its core. However, when you write a piece of code and then tell the lisp reader to read that piece of code, it upcases all the symbol names it encounters. For instanc...

Dear Lispers, I've been writing a small HTTP server and I'd like to deploy it to a friends computer. To allow some configuration to be done per machine, I want to add a settings file (like 'setting.ini' for other applications) to the same directory as the program will be in, so it can read in the se...

Thanks for the responses. I got a bit confused in all the possibilities, and what I ended up needing was a macrolet, as I also need to pass the parameters directly to the other function (which contains required and keyword parameters): (labels ((cow (some arguments here) "cow")) (macrolet ...