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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: RE: U : Unbounded_String := "bla bla bla"; (was: Is the Writing...)
Date: Fri, 03 Oct 2003 22:41:17 +0200
Date: 2003-10-03T22:41:17+02:00	[thread overview]
Message-ID: <blkmk1$dhfkm$1@ID-77047.news.uni-berlin.de> (raw)
In-Reply-To: mailman.29.1065182628.25614.comp.lang.ada@ada-france.org

amado.alves wrote:

> "...we already have implicit conversion in Ada for numeric literals."
> (Jeff)
> 
> I know, and that was the 'precedent' for my proposal. And I'm familiar
> with the 'nightmare' of generalised implicit conversion (in C). But this
> could be tamed in Ada by defining the effect scope of pragma
> Implicit_Conversion to be the immediately enclosing block.
> 
> Or a family of such pragmas for fine control of the effect:
> 
>   Implicit_Conversion_Down_From_Here
>   Implicit_Conversion_Up_To_The_Next_Enclosing_Block
>   Implicit_Conversion_All_Over
> 
> However I am not totally confortable with *pragmas* for this class of
> effect. Is their precedence?

It would be awful. The only way *any* conversion may appear is a definition
of a derived type.

type B is new A with ...; -- This inherits and defines a [view] conversion

Similarly there should be a way to *not* inherit an implementation of A, but
provide all necessary conversions instead.

-- 
Regards,
Dmitry A. Kazakov
www.dmitry-kazakov.de



  parent reply	other threads:[~2003-10-03 20:41 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-10-03 12:00 U : Unbounded_String := "bla bla bla"; (was: Is the Writing...) amado.alves
2003-10-03 15:54 ` Mark A. Biggar
2003-10-03 20:41 ` Dmitry A. Kazakov [this message]
  -- strict thread matches above, loose matches on Subject: below --
2003-10-03 16:12 amado.alves
2003-10-04 12:16 ` Preben Randhol
2003-10-02 18:02 amado.alves
2003-10-03  0:05 ` U : Unbounded String : " Alexander Kopilovitch
2003-10-03 20:46   ` Dmitry A. Kazakov
2003-10-03  9:00 ` U : Unbounded_String := " Preben Randhol
2003-10-03 11:17   ` Jeff C,
2003-10-04  2:49     ` Robert I. Eachus
2003-10-06 23:57       ` Alexandre E. Kopilovitch
2003-10-07  8:51         ` Dmitry A. Kazakov
2003-10-08 19:12           ` Alexandre E. Kopilovitch
2003-10-09  8:42             ` Dmitry A. Kazakov
2003-10-10 20:58               ` Alexander Kopilovitch
2003-10-13  8:35                 ` Dmitry A. Kazakov
2003-10-13 21:43                   ` Alexandre E. Kopilovitch
2003-10-14  8:09                     ` Dmitry A. Kazakov
2003-10-16  9:39                       ` Alexandre E. Kopilovitch
2003-10-18 10:57                         ` Dmitry A. Kazakov
2003-10-08 23:18         ` Robert I. Eachus
2003-10-09 21:35           ` Alexandre E. Kopilovitch
2003-10-10 18:10             ` Robert I. Eachus
2003-10-11 19:43               ` Alexandre E. Kopilovitch
2003-10-12  5:03                 ` Robert I. Eachus
2003-10-13  9:07                   ` Dmitry A. Kazakov
2003-10-13 14:36                   ` Alexandre E. Kopilovitch
2003-10-13 19:46                     ` Robert I. Eachus
2003-10-14  1:35                       ` Jeffrey Carter
2003-10-14 17:11                       ` Alexandre E. Kopilovitch
2003-10-14 20:26                         ` Mark A. Biggar
2003-10-14 20:58                           ` Robert I. Eachus
2003-10-15 16:59                           ` Alexandre E. Kopilovitch
2003-10-15 20:38                             ` (see below)
2003-10-16  0:31                               ` Alexandre E. Kopilovitch
2003-10-16  2:30                                 ` (see below)
2003-10-16 13:54                                   ` Alexandre E. Kopilovitch
2003-10-16 14:11                                     ` (see below)
2003-10-16  8:01                             ` Dmitry A. Kazakov
2003-10-17 20:26                   ` Randy Brukardt
2003-10-17 21:39                     ` Alexandre E. Kopilovitch
2003-10-17 23:03                     ` Robert I. Eachus
2003-10-23 21:11                       ` Alexandre E. Kopilovitch
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