4 May
2005
4 May
'05
4:47 p.m.
On Wednesday 04 May 2005 22:22, karczma@info.unicaen.fr wrote:
Bryce Bockman writes:
Scheme is strict, so it lacks some of the flexibility (and drawbacks) that come from Laziness, but in the book they teach you how to build a Lazy version of Scheme, which is instructive in understanding what's really going on in Lazy evaluation.
Don't confuse categories please. SICP doesn't say how to make a lazy variant of Scheme. Applicative protocol is not normal protocol, the reduction is, as it is.
We may have a different copy of SICP, but in mine (2nd edition) there is Chapter 4.2 "Variantions on a Scheme -- Lazy Evaluation" and in particular 4.2.2 "An Interpreter with Lazy Evaluation". Ben