ftp.cs.arizona.edu/ftp.cs.arizona.edu.tar/ftp.cs.arizona.edu/icon/newsgrp/group95c.txt/000109_icon-group-sender _Mon Dec 4 17:01:09 1995.msg

Internet Message Format | 1996-01-03 | 1KB

Received: by cheltenham.cs.arizona.edu; Mon, 4 Dec 1995 13:15:34 MST
To: [e-mail]
Date: 4 Dec 1995 17:01:09 GMT
From: John Lindsay <[e-mail]>
Message-Id: <49v9gl$[e-mail]>
Organization: Royal Military College
Sender: [e-mail]
Subject: Generators and/vs. coroutines ?
Errors-To: [e-mail]

Generators are extremely useful and neat where they are needed (even a
sine qua non in some cases), maddening to understand for the first
time, and totally infuriating to even think of implementing in a
'normal' C, FORTRAN, Pascal .... call-stack environment where full
tasking and multithreading and exception-handling may be involved.
Hence I pose the following:

Is an Icon generator anything more or less than a coroutine which can
be instantiated by an explicit call with value arguments, and can
'return' a function value across the coroutine boundary ?

--
All the best !

John H. Lindsay,                     Phone:  [phone] - 1 - 6419
Department of Mathematics and Computer Science,
Royal Military College of Canada,           Internet: [e-mail]
Kingston, Ontario, Canada,  K7K 5L0.               Fax: [phone]