(vl-load-com) - loaded?

[iBlachu]

How to check if additional VisualLisp functions have already been loaded with the command (vl-load-com)?

[paullimapa]

Apparently no harm to load it again so no need to check if it’s been loaded http://docs.autodesk.com/ACD/2011/ENU/filesALR/WS1a9193826455f5ff1a32d8d10ebc6b7ccc-68a6.htm

[hak_vz]

You can add (vl-load-com) to any function. If visual lisp extensions are loaded running it again won't make any change.

[Kent1Cooper]

I also suggest the same: just do it -- it won't matter if it's already been done.

The difficulty with testing whether it has been done already is that the first approach that comes to mind is to try running some (vl...) function and see whether you get an error.  But the first way that comes to mind to check that, in a way that can avoid having what you're doing fall apart from the resulting error, itself involves a (vl-...) function, so it can't be used if (vl-load-com) hasn't been done.  Maybe there's some other way to check, but it may not be worth the trouble anyway.