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From: kilgallen@eisner.decus.org (Larry Kilgallen)
Subject: Re: Static variables?
Date: 1997/03/25
Message-ID: <1997Mar25.073604.1@eisner>#1/1
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References: <332D71FF.4773@cae.ca> <JSA.97Mar17193855@alexandria>
 <dewar.858770825@merv> <5h8786$oml$1@goanna.cs.rmit.edu.au>
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Date: 1997-03-25T00:00:00+00:00
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In article <5h8786$oml$1@goanna.cs.rmit.edu.au>, ok@goanna.cs.rmit.edu.au (Richard A. O'Keefe) writes:

> One of the things that has me bewildered and worried is the growing number
> of concurrent languages _without_ nested subprograms.  Java is an obvious
> example.  Another recent example is Limbo.  The Limbo IPC mechanism is
> tranmitting messages over named typed channels.  All processes run in the
> same address space.  There are no nested procedures.  Presto no-chango:
> it is the _programmer's_ job to ensure that variables are not operated on
> in multiple threads.  Ada looks better and better every day.

Is the quality being sought just nested subprograms,
or is uplevel addressing actually required ?  There
are languages which have nested subprograms without
uplevel addressing.

I suppose one can simulate uplevel addressing with lots of
in-out parameters, but for me that moves away from readability.

Larry Kilgallen