How to check which Lsp / des is loaded?

Peter2

When I use
(load "mytool.des")
again and again, I get the message:
; error : application already loaded : <mytool>

The message is correct, but how can I avoid it?
I know the function (arx) to check the loaded Arx, but how to check the loaded DES and LSP?

Virgil

Regarding des files, the (vl-list-loaded-vlx) function can be used. This will return a list with loaded des files.
https://developer.bricsys.com/bricscad/help/en_US/CurVer/DevRef/source/vl-list-loaded-vlx.htm

Regarding simple lisp files, you could check whether a certain function inside the lisp file is defined, for instance by using (vl-symbol-value ...).
https://developer.bricsys.com/bricscad/help/en_US/CurVer/DevRef/source/vl-symbol-value.htm

Peter2

Thanks, Virgil

looks fine. But the documentation says it should return "nil" for no DES-files, but I have this:

: (vl-list-loaded-vlx)
("")

Do you get NIL or ("")?

ALANH

Simple (if (not functionname)(load "my lisp")

Peter2

Thanks @ALANH
good and simple idea. But in this special case I will use vl-list-loaded-vlx.

Peter2

Peter2 said:

...the documentation says it should return "nil" for no DES-files, but I have this:

: (vl-list-loaded-vlx)
("")

Do you get NIL or ("")?

Just to refresh the question for everybody ..

Virgil

In Bricscad, (vl-list-loaded-vlx) returns ("") when no des file is loaded.

TorstenMoses

Dear Peter,

issue is confirmed, and now fixed ... with upcoming V24.2.04 the "empty list" will be correctly returned as NIL.
thanks & many greetings !

Peter2

Thanks, Torsten.

Roy Klein Gebbinck

There is also this:
https://developer.bricsys.com/bricscad/help/en_US/CurVer/DevRef/source/vl-list-loaded-lisp.htm