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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.os.linux.advocacy
Subject: Re: Find "py.exe" & copy it to "Python" (flat, no extension).
Date: Sat, 11 May 2024 01:13:35 -0000 (UTC)
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On 11 May 2024 00:44:47 GMT, rbowman wrote:

> 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

Ah, I see. The 2nd edition has “4.3 Variations on a Scheme —
Nondeterministic Computing” in place of “Packages”.

> 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.

That is so odd, because continuations are such a key feature of
Scheme. They’re essentially a generalized control construct: you can
use them to implement things like loops with multiple exits,
exceptions, and coroutines. The one thing that’s difficult to do with
them is arbitrary gotos (convenient, that).