🚀 go-pugleaf

In article <8O=9X44@xds13.ferranti.com> peter@ficc.ferranti.com (Peter
da Silva) writes:

   In article <MARKF.91Mar13165921@montreux.ai.mit.edu>
markf@zurich.ai.mit.edu writes:

   > Yes.  But note that the code for the procedure is built once;
   > only the environment needs to be built at runtime, assuming that
   > any environment needs to be built at all (the compiler may
   > determine that some procedures don't need an environment).

   OK, so there's where the semantics of the interpreter are
   implemented, in the bits and peices that build and maintain these
   environments without bothering the programmer.

C'mon.  There is no interpreter hiding in there. My point about
building the code for the peocedure only once had nothing to do with
interpreters. It was just a point about efficiency. The semantics of
Scheme (or most other languages with first class procedures) does not
require an interpreter.  Why do you think first class procedures need
interpreters?

-Mark
--

Mark Friedman
MIT Artificial Intelligence Lab
545 Technology Sq.
Cambridge, Ma. 02139

markf@zurich.ai.mit.edu