James Kanze wrote:
>
> d96-mst@nada.kth.se (Mikael Steldal) writes:
>
> |>  In article <rf520bg8ta2.fsf@vx.cit.alcatel.fr>,
> |>  James Kanze <james-albert.kanze@vx.cit.alcatel.fr> wrote:
> |>
> |>  >If you mean a standard date_and_time class, however, no.
> |>
> |>  That would have been useful. But it's perhaps possible to write a fully
> |>  portable date_and_time calss using <ctime>?
>
> Probably, depending what you want in it.  IMHO, the real problem in
> writing a standard, or even a general, date_and_time class is in
> deciding exactly what it should/should not do.

Exactly.  There are so many issues involved in the design of date/time
classes that it would nearly impossible to specify one that met
everyone's needs.  Issues include: Julian/Gregorian time, time-zones,
variation of daylight savings rules due to local politics, expressing
unusual times (eg. "last day of the month"), not to mention the many
other calendar systems around the world.

I simple approach might be to just wrap the existing C stuff into
classes.  I don't see that we would gain much from this.


Regards,
Marcelo Cantos
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d96-mst@nada.kth.se (Mikael Steldal) writes:

|>  In article <rf520bg8ta2.fsf@vx.cit.alcatel.fr>,
|>  James Kanze <james-albert.kanze@vx.cit.alcatel.fr> wrote:
|>
|>  >If you mean a standard date_and_time class, however, no.
|>
|>  That would have been useful. But it's perhaps possible to write a fully
|>  portable date_and_time calss using <ctime>?

Probably, depending what you want in it.  IMHO, the real problem in
writing a standard, or even a general, date_and_time class is in
deciding exactly what it should/should not do.

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In article <rf520bg8ta2.fsf@vx.cit.alcatel.fr>,
James Kanze <james-albert.kanze@vx.cit.alcatel.fr> wrote:

>If you mean a standard date_and_time class, however, no.

That would have been useful. But it's perhaps possible to write a fully
portable date_and_time calss using <ctime>?
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d96-mst@nada.kth.se (Mikael Steldal) writes:

|>  Will the C++ standard include a class for date&time handling?

It depends on what you mean by "date and time handling."  It will
certainly include all of the functions defined in the C header
<time.h>.  In addition, there are four conversion functions in
<locale>.

If you mean a standard date_and_time class, however, no.

--
James Kanze      home:     kanze@gabi-soft.fr        +33 (0)1 39 55 85 62
                 office:   kanze@vx.cit.alcatel.fr   +33 (0)1 69 63 14 54
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Will the C++ standard include a class for date&time handling?
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