Re: List container strawman 1.1

["Nick Roberts" <nickroberts@adaos.worldonline.co.uk>]

But this can be done, and should be done, by declaring 'read' and 'write'
procedures for the List_Type, conforming to what RM95 13.13.2 requires, and
then using representation clauses to replace the default List_Type'Read and
List_Type'Write attributes. This way, the required behaviour becomes
implicit and automatic.

--
Nick Roberts


"Marin David Condic" <dont.bother.mcondic.auntie.spam@[acm.org> wrote in
message news:9s6d45$bd2$1@nh.pace.co.uk...
> Just to toss in one more bit of feature-creep:
>
> procedure Load (
>     File    : in out Ada.Streams.Stream_IO.File_Type ;
>     Subject : out List) ;
>
> procedure Store (
>     File    : in out Ada.Streams.Stream_IO.File_Type ;
>     Subject : in List) ;
>
>
> I'm presuming that the user can handle file management and keep track of
> which list(s) they have put into the stream file and in what order.
> (Dangerous, but so is life in general...) Under it lies some version of
> 'Input and 'Output to the stream file.
>
> It might similarly have some advantage to have something like:
>
> procedure Put (
>     Subject  : in     List
>     Bytes    :    out Ada.Streams.Stream_Element_Array) ;
>
> procedure Get (
>     Subject  :    out List
>     Bytes    : in     Ada.Streams.Stream_Element_Array) ;