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From: CTips <ctips@bestweb.net>
Newsgroups: comp.lang.ada,comp.lang.c++,comp.realtime,comp.software-eng
Subject: Re: Teaching new tricks to an old dog (C++ -->Ada)
Date: Sat, 12 Mar 2005 12:59:31 -0500
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Xref: g2news1.google.com comp.lang.ada:9243 comp.lang.c++:45312
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Date: 2005-03-12T12:59:31-05:00
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Robert A Duff wrote:

> Kilgallen@SpamCop.net (Larry Kilgallen) writes:
> 
> 
>>Even Bliss has nested functions.  What Ada has that Pascal has in addition
>>to nested functions is uplevel addressing, allowing an inner function to
>>access data declared in outer scopes.
> 
> 
> Heh?  Pascal has that.  In fact, practically every programming language
> outside the C family has this feature.  It's quite useful -- almost
> essential in multi-threaded programs.
> 
> - Bob

Yeah, and don't ask what it costs you. I'd carefully forgotten about all 
the grungy details about displays and static/dynamic chaining, and you 
had to remind me. I particularily like solutions that reserves a 
register for the top-of-display/top-of-static-chain. Thats right - blow 
away a register for that. And then of course the cost of 
maintaining/walking those structures.

If you need thread-private storage, there are *much* cheaper solutions.