Which a code work faster: LISP (compiled/uncompiled), or .NET? Anybody tested it?
It depends on what the code does, and whether you are talking about LISP in general or AutoLISP/Visual LISP.
Most full-blown LISP implementations can be compiled to native code that can run as fast as native code compiled from C/C++. That's not true for AutoLISP and there are other limitations in AutoLISP that can make it slow, depending on what the code must do.
For example, there are no arrays or hashtable-based containers to provide fast indexed access or key-based lookups, and that means that LISP code that needs to do things which arrays and hashtable containers are efficient for, will be far slower.
There are some kludges that allow LISP programmers to work around some of those limitations (for example, to simulate arrays, one can generate symbols with 'mangled' names that contain numeric values representing an array element position, and assign the array element values to the symbols).
