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Re: Worrying development

From: Marius Vollmer
Subject: Re: Worrying development
Date: Fri, 23 Jan 2004 22:01:35 +0100
User-agent: Gnus/5.1002 (Gnus v5.10.2) Emacs/21.3 (gnu/linux)

Tom Lord <address@hidden> writes:

> Mutation-sharing shared substrings are an upwards compatible extension
> to the Scheme standard.  They break no correct programs.  They enable
> new kinds of programs.

I'd say that the real 'trouble' is that strings are mutable at all.
Mutation-sharing substrings are only a minor additional semantical
annoyance.  They do enable new kinds of programs, and that makes them

Also, there is the possibility on the horizon that we turn string-ref
etc into 'primitive generics' which means that people could implement
new kinds of strings using GOOPS.

Also, I still like the idea of using mutation-sharing substrings as
markers that allow O(1) access into variable-width encoded strings.

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