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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Ada 2012 Constraints (WRT an Ada IR)
Date: Mon, 12 Dec 2016 21:46:13 +0100
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Date: 2016-12-12T21:46:13+01:00
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On 2016-12-12 20:48, Shark8 wrote:
> On Monday, December 12, 2016 at 10:39:28 AM UTC-7, Dmitry A. Kazakov wrote:
>> On 2016-12-12 16:31, G.B. wrote:
>>> On 12/12/2016 09:27, Dmitry A. Kazakov wrote:
>>>
>>>>> I.e., the programmer writing Y (X (A, B)) has ensured that
>>>>> the assumption expressed as X'Pre is actually true before
>>>>> calling X.
>>>>
>>>> So what? Programmers program programs, and how is that related to
>>>> contracts etc?
>>>
>>> Informing is contracts' primary purpose,
>>
>> Nope. The contract's purpose is to constrain contracted parties.
>> Informing is the purpose of E-mail, newspaper etc...
>
> They aren't exactly mutually exclusive -- consider electronic
> components, they have a data-sheet that both informs you of their
> limitations and operate within prescribed bounds when those conditions
> are met. (Absent manufacturing defects and wear-out, obviously.)

Add data-sheets to the list...

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