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On Fri, 10 May 2024 21:52:50 -0000 (UTC), Lawrence D'Oliveiro wrote:

> On 10 May 2024 19:17:39 GMT, rbowman wrote:
> 
>> You mean the Wizard book? I worked my way through that one long winter.
>> The concepts were interesting but I didn't think using Scheme for the
>> didactic language added anything.
> 
> Did you look at how continuations were used? There is an exercise in the
> book called “nondetermistic Scheme”.

No, my copy was published in 1992 and is the first edition. 

https://en.wikipedia.org/wiki/
Structure_and_Interpretation_of_Computer_Programs

lists 

Chapter 4: Metalinguistic Abstraction
4.1 The Metacircular Evaluator
4.2 Variations on a Scheme – Lazy Evaluation
4.3 Variations on a Scheme – Nondeterministic Computing
4.4 Logic Programming

mine has

Chapter 4: Metalinguistic Abstraction
4.1 The Metacircular Evaluator
4.2 Variations on a Scheme – Lazy Evaluation
4.3 Packages
4.4 Logic Programming
4.5 Implementing the Query System

Chapter 2 drops the Symbolic Data section. Chapter 5 is reordered but I 
think all the discussion is there. The only index hit on continuation is a 
half page on 'continuator descriptors',  'next', 'return' and a jump to a 
named entry point like a goto in C.

After doing the exercises that winter I had no reason to follow the 
development of Scheme so I don't know if 'call-with-current-continuation' 
was added or if the authors didn't think it important. It isn't in the 
index either.