Re: [Scheme-reports] DELAY AND FORCE Andre van Tonder (23 Apr 2011 23:29 UTC)
Re: [Scheme-reports] DELAY AND FORCE Ray Dillinger (24 Apr 2011 01:01 UTC)

Re: [Scheme-reports] DELAY AND FORCE Ray Dillinger 24 Apr 2011 01:00 UTC

I knew that I was not able to correctly implement DELAY and FORCE
without running into problems; I didn't realize these problems
were pervasive problems with the primitives, I just thought that
I was missing some insight into methods.

What I could and did implement without running into problems was
lazy and eager functions as opposed to delayed and forced versus
eager evaluations. But the semantics of mixing calls to lazy and
eager functions can be confusing, especially when the functions
are evaluated in the course of expanding macros.

				Bear

_______________________________________________
Scheme-reports mailing list
Scheme-reports@scheme-reports.org
http://lists.scheme-reports.org/cgi-bin/mailman/listinfo/scheme-reports