[plt-scheme] archival docs on arity

From: Matthew Flatt (mflatt at cs.utah.edu)
Date: Wed Sep 9 15:30:45 EDT 2009

The addition of `arity' is still listed in the MzScheme release notes
as a new feature of v0.29 (October 1995).

I don't remember any precedent for `arity'. I remember a brief
discussion between Robby, Matthias, and me on whether we should add an
`arity-at-least' structure type or just encode the variant with
existing datatypes. Robby and I preferred the new structure type, but
I'd probably take Matthias's side now. (Than again, Matthias may well
have changed his mind in the meantime. Robby surely sticks with his
earlier opinion.)

At Wed, 09 Sep 2009 15:16:46 -0400, David Van Horn wrote:
> Are there archival copies of PLT's documentation available somewhere on 
> the web?
> I'm looking for the earliest possible incarnation of this (1998 via the 
> way back machine):
> http://web.archive.org/web/19981206062856/www.cs.rice.edu/CS/PLT/packages/doc/m
> zscheme/node34.htm
> I know that this interface was supported as early as May 1996, but I 
> can't track down a working link to documentation.
> http://groups.csail.mit.edu/mac/ftpdir/scheme-mail/HTML/rrrs-1996/msg00151.html
> (This is not the most important historical inquiry so please don't 
> expend a great deal of effort trying to track it down and/or make all 
> the 1996 documentation available online.  A simple "no" will do.)
> Does anyone remember if this API is inspired by other Schemes, or is 
> this a PLT original?  I know case-lambda goes back to Dybvig and Hieb, 
> LFP, July 1998 and Lisp and Symbolic Computation, September 1990, but 
> those papers don't mention arity inspection and Chez doesn't include the 
> PLT interface (although it appears definable).
> Thanks,
> David
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