Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!mcnc!uvaarpa!vger.nsu.edu!g_harrison
From: g_harrison@vger.nsu.edu
Newsgroups: comp.lang.pascal
Subject: Re: Enumeration Inverse- was Request : Help with E Types
Message-ID: <369.27671bee@vger.nsu.edu>
Date: 13 Dec 90 10:13:02 GMT
References: <3983@uniol.UUCP> <1990Dec10.180345.31492@wpi.WPI.EDU> <357.27648291@vger.nsu.edu> <1990Dec13.033609.15385@maverick.ksu.ksu.edu>
Lines: 36

In article <1990Dec13.033609.15385@maverick.ksu.ksu.edu>, kincaid@mpccl.ksu.edu (Joe Kincaid) writes:
> In article <357.27648291@vger.nsu.edu> g_harrison@vger.nsu.edu writes:
>>In article <1990Dec10.180345.31492@wpi.WPI.EDU>, kamal@wpi.WPI.EDU (Kamal Z Zamli) writes:
>>> In article <3983@uniol.UUCP> Arne.Gehlhaar@arbi.informatik.uni-oldenburg.de (Arne Gehlhaar) writes:
>>

[some of my babble deleted]

>>We can certainly find the Nth (N = 0...) element in an enumerated type in
>>Pascal by searching for it, but are there some tricks (Machine-Dependent or
>>otherwise) to provide an inverse to ORD that do not involve searching?
>>
>>George....
>>
> 
> I usually use typecasting to achieve this.  It works in Turbo anyway and
> you should probably check to be sure the '0' element lines up where you think
> it does.
> 
[Joseph's further stuff deleted]
> Joseph Kincaid                 |  All the views contained herein are my own.
> kincaid@einstein.mpccl.ksu.edu |  Everything else I share with my wife.
> KSU - Mathematics Department   |  Come to think, those are probably hers, too.

I sincerely thank all who have replied and followed up on my question about a
functional inverse to ORD.  The answer was always "typecasting."  

George......

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