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From: oz@yunexus.yorku.ca (Ozan Yigit)
Newsgroups: comp.lang.scheme
Subject: fluid-let [Re: Non Chez Nous]
Message-ID: <21903@yunexus.YorkU.CA>
Date: 18 Mar 91 00:50:25 GMT
References: <1991Mar15.163509.12130@rice.edu> <2877@kraftbus.cs.tu-berlin.de> <1991Mar16.155847.4314@rice.edu> <2884@kraftbus.cs.tu-berlin.de>
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In article <2884@kraftbus.cs.tu-berlin.de>
net@opal.cs.tu-berlin.de (Oliver Laumann) writes:

>Thanks for the reference.  I realize that it must be possible to
>write a procedure in R*RS-Scheme that accomplishes the same
>functionality as Chez Scheme's fluid-let, but note that fluid-let is a
>special form.

Actually, there is another reference that shows that fluid-let may require
a bit more than simple syntactic extension for implementation in order to
avoid interfering with tail-recursion.

B. Duba, M. Felleisen, D. Friedman, ``Dynamic Identifiers can be Neat''
Indiana University Computer Science Technical Report No. 220, April 1987

... oz