ZAREA | AutoLISP to make area calculation easier

Otoko.This time, I'd like to introduce a LISP for calculating areas.Isn't the task of picking up areas quite tedious?Even ...
Ars Technica

Another Common Lisp question - How to evaluate #'(lambda nil (foo))

I want to invoke the lambda form contained within x and get its result (7 in this case). How do I do this? (EVAL x) just returns the lambda form, and attempting to ...