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Message from discussion Wide character implementation
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Frode Vatvedt Fjeld  
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 More options Mar 19 2002, 4:09 am
Newsgroups: comp.lang.lisp, comp.lang.scheme
From: Frode Vatvedt Fjeld <fro...@acm.org>
Date: Tue, 19 Mar 2002 10:08:59 +0100
Local: Tues, Mar 19 2002 4:08 am
Subject: Re: Wide character implementation
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tb+use...@becket.net (Thomas Bushnell, BSG) writes:

> If one uses tagged pointers, then its easy to implement fixnums as
> ASCII characters efficiently.

Hm.. perhaps you mean it's easy to implement characters as immediate
values?

> But suppose one wants to have the character datatype be 32-bit
> Unicode characters?  Or worse yet, 35-bit Unicode characters?

> At the same time, most characters in the system will of course not
> be wide.  What are the sane implementation strategies for this?

I suppose to assign "most characters in the system" to a sub-type of
the wide characters, and implement that sub-type as immediates.

--
Frode Vatvedt Fjeld


 
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