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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Instantiating package problems
Date: Wed, 6 Jan 2016 09:53:19 +0100
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Date: 2016-01-06T09:53:19+01:00
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On 2016-01-06 03:46, Andrew Shvets wrote:

> I have never heard of preconditions.  I'll definitely take a look.

Start with The Science of Programming by David Gries:

http://www.amazon.com/The-Science-Programming-Monographs-Computer/dp/0387964800

(I believe free PDF copies to download is available as well, though I 
don't know how legal they are)

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de