LispForum

That's got it.
Thanks loads,
Kevin

I think that's it. Can you give me a quick and dirty example of how to use time-apply? It seems to want two arguments (first a procedure, then a list). It's not following the same form as "runtime."
Many thanks

I'm using Dr. Scheme.

Greetings. I'm working my way through "Structure and Interpretation of Computer Programs" and am working on a program that calls for the use of the primitive "runtime" as a way to measure how long it took the computer to calculate the answer. Unfortunately, my version of Scheme d...

Ah. I told you it was a basic question.
Many thanks. Works like a charm.
Kevin

Greetings. For what I'm sure is a really basic reason, I can't get negative numbers to work. I keep getting error messages about an undefined identifier. A simple example (finding the absolute value of an integer) that's copied directly out of SICP: (define (ab x) (cond ((< x 0) (-x)) (else x))) > (...