From: Victor Porton <porton@narod.ru>
Subject: Re: Type invariants and private extensions?
Date: Mon, 11 Sep 2017 23:48:43 +0300
Date: 2017-09-11T23:48:43+03:00 [thread overview]
Message-ID: <op6sr9$oop$1@gioia.aioe.org> (raw)
In-Reply-To: 364ff8e0-c7dd-4980-b19f-5d438edd8353@googlegroups.com
Egil H H wrote:
> On Monday, September 11, 2017 at 9:51:35 PM UTC+2, Victor Porton wrote:
>> As far as I understand, type invariants cannot be applied to types with
>> private extensions. Right?
>>
>> It would be nice to create private extension types which would allow to
>> use them only when certain boolean function on the parent type returns
>> True.
>>
>> Is anything like this possible?
>>
>
> You can already do
> type Foo is tagged private
> with Type_Invariant'Class => Bar(Foo);
>
> The Invariant will then be inherited by all derived types
It is not what I want. I want different invariants for different derived
types.
--
Victor Porton - http://portonvictor.org
next prev parent reply other threads:[~2017-09-11 20:48 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-11 19:51 Type invariants and private extensions? Victor Porton
2017-09-11 20:00 ` Egil H H
2017-09-11 20:48 ` Victor Porton [this message]
2017-09-11 21:19 ` Egil H H
2017-09-11 21:27 ` Victor Porton
2017-09-11 21:49 ` Egil H H
2017-09-11 22:00 ` Victor Porton
2017-09-11 22:06 ` Egil H H
2017-09-12 7:30 ` Dmitry A. Kazakov
2017-09-11 22:00 ` Jere
2017-09-11 22:02 ` Victor Porton
2017-09-12 18:26 ` Jeffrey R. Carter
2017-09-12 18:54 ` Victor Porton
2017-09-12 19:56 ` Jeffrey R. Carter
2017-09-12 20:08 ` Victor Porton
2017-09-12 22:34 ` Shark8
2017-09-12 22:59 ` Victor Porton
2017-09-13 4:21 ` Jere
2017-09-13 4:28 ` Jere
2017-09-13 4:34 ` Jere
2017-09-14 13:52 ` Victor Porton
2017-09-15 0:48 ` Jere
2017-09-16 14:22 ` Victor Porton
2017-09-14 7:28 ` Shark8
2017-09-14 13:56 ` Victor Porton
2017-09-14 13:58 ` Victor Porton
2017-09-11 22:48 ` Shark8
2017-10-02 23:16 ` Randy Brukardt
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