Re: calenday (was Re: IBM Acquires Rational Ada

Re: calenday (was Re: IBM Acquires Rational Ada

[Grein, Christoph]

RM 13.4(8) For nonboolean enumeration types, if the coding is not specified for 
the type, then for each value of the type, the internal code shall be equal to 
its position number.

So your proposal is superfluous.

And there is no global agreement whether the week starts with Sunday or Monday. 
Historically, it starts with Sunday, but there are countries where it starts 
with Monday.

> >>> type day_name_type is (mon,tue,wed,thu,fri,sat,sun);
> >>> 
> >>> Add a representation clause to guarantee that the values
> >>> start with sun => 0, mon => 1 etc.  For some code, it is
> >>> much easier to work with the day of the week in the form
> >>> of a number.
> >> 
> >> I'm puzzled by this advice.
> >> 
> >> day_name_type'Pos(mon) .. day_name_type'Pos(sun)
> >> 
> >> is necessarily 0 .. 6, is it not?
> >> 
> > Yes, the _pos_ attribute is defined by the language as you state,
> > but Warren is looking to have the _representation_ specified in
> > the package specification.  This insures that instantiations of
> > Ada.Unchecked_Conversion between day_name_type and
> > integer types produce specified results.
> > 
> 
> Yes, but if what you want is "to work with the day of the week in
> the form of a number", why use Unchecked_Conversion when
> day_name_type'Pos does what you want without further ado?

Re: calenday (was Re: IBM Acquires Rational Ada

[Robert A Duff]

"Grein, Christoph" <christoph.grein@eurocopter.com> writes:

> RM 13.4(8) For nonboolean enumeration types, if the coding is not
> specified for the type, then for each value of the type, the internal
> code shall be equal to its position number.
> 
> So your proposal is superfluous.

And illegal, as our resident C++ guru pointed out.  ;-)

> And there is no global agreement whether the week starts with Sunday
> or Monday.  Historically, it starts with Sunday, but there are
> countries where it starts with Monday.

I read somewhere that there is an ISO standard for dates and times that
says the week starts on Monday.

However, I think I can quote a book that predates ISO by thousands of
years, which says Sunday is the first day of the week.  ;-)

I go with Sunday first.

- Bob

Re: calenday (was Re: IBM Acquires Rational Ada

[Dennis Lee Bieber]

Grein, Christoph fed this fish to the penguins on Monday 16 December 
2002 09:47 pm:


> And there is no global agreement whether the week starts with Sunday
> or Monday. Historically, it starts with Sunday, but there are
> countries where it starts with Monday.
>
        For purposes of payroll processing, my former employer started the 
week on Saturday.

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 > ============================================================== <
 >   wlfraed@ix.netcom.com  | Wulfraed  Dennis Lee Bieber  KD6MOG <
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Re: calenday (was Re: IBM Acquires Rational Ada

[Wes Groleau]

> However, I think I can quote a book that predates ISO by thousands of
> years, which says Sunday is the first day of the week.  ;-)

If you are speaking of the book I think you are
speaking of, I am not aware of any passage that
actually names the first day or seventh day.  :-)

Re: calenday (was Re: IBM Acquires Rational Ada

[Robert A Duff]

Wes Groleau <wesgroleau@despammed.com> writes:

> If you are speaking of the book I think you are
> speaking of, I am not aware of any passage that
> actually names the first day or seventh day.  :-)

I believe it calls the seventh day "sabbath".
I don't know if that's a name or a description or both.
But it's certainly the same day we call "saturday"
in the United States.  If you think it's referring to
what we call "sunday", I think you must have lost count
somewhere in the last few thousand years.  ;-)

- Bob

Re: calenday (was Re: IBM Acquires Rational Ada

[Dennis Lee Bieber]

Robert A Duff fed this fish to the penguins on Tuesday 17 December 2002 
06:09 pm:

> I believe it calls the seventh day "sabbath".
> I don't know if that's a name or a description or both.
> But it's certainly the same day we call "saturday"
> in the United States.  If you think it's referring to
> what we call "sunday", I think you must have lost count
> somewhere in the last few thousand years.  ;-)
>
        Shall we add the minor confusion that, in many cultures, the "day" 
began at /sunset/ (hence such things as "Christmas eve", 
"Halloween"[aka All Hallows Eve] -- even though the calendar is labeled 
Dec 24, once the sun set, the /next/ day was considered to have 
started: Christmas).

-- 
 > ============================================================== <
 >   wlfraed@ix.netcom.com  | Wulfraed  Dennis Lee Bieber  KD6MOG <
 >      wulfraed@dm.net     |       Bestiaria Support Staff       <
 > ============================================================== <
 >        Bestiaria Home Page: http://www.beastie.dm.net/         <
 >            Home Page: http://www.dm.net/~wulfraed/             <

Re: calenday (was Re: IBM Acquires Rational Ada

[Anders Wirzenius]

"Robert A Duff" <bobduff@shell01.TheWorld.com> wrote in message news:wcchedcpuy9.fsf@shell01.TheWorld.com...
> I read somewhere that there is an ISO standard for dates and times that
> says the week starts on Monday.
>
> However, I think I can quote a book that predates ISO by thousands of
> years, which says Sunday is the first day of the week.  ;-)
>
> I go with Sunday first.
>
> - Bob

ISO 8601

br
Anders

Re: calenday (was Re: IBM Acquires Rational Ada

[Karel Miklav]

Is there a package or something to work with locales in Ada (like in C, 
you know :) )?


Grein, Christoph wrote:
> RM 13.4(8) For nonboolean enumeration types, if the coding is not specified for 
> the type, then for each value of the type, the internal code shall be equal to 
> its position number.
> 
> So your proposal is superfluous.
> 
> And there is no global agreement whether the week starts with Sunday or Monday. 
> Historically, it starts with Sunday, but there are countries where it starts 
> with Monday.
> 
> 
>>>>>type day_name_type is (mon,tue,wed,thu,fri,sat,sun);
>>>>>
>>>>>Add a representation clause to guarantee that the values
>>>>>start with sun => 0, mon => 1 etc.  For some code, it is
>>>>>much easier to work with the day of the week in the form
>>>>>of a number.
>>>>
>>>>I'm puzzled by this advice.
>>>>
>>>>day_name_type'Pos(mon) .. day_name_type'Pos(sun)
>>>>
>>>>is necessarily 0 .. 6, is it not?
>>>>
>>>
>>>Yes, the _pos_ attribute is defined by the language as you state,
>>>but Warren is looking to have the _representation_ specified in
>>>the package specification.  This insures that instantiations of
>>>Ada.Unchecked_Conversion between day_name_type and
>>>integer types produce specified results.
>>>
>>
>>Yes, but if what you want is "to work with the day of the week in
>>the form of a number", why use Unchecked_Conversion when
>>day_name_type'Pos does what you want without further ado?

Re: calenday (was Re: IBM Acquires Rational Ada

[Ted Dennison]

Dennis Lee Bieber <wlfraed@ix.netcom.com> wrote in message news:<gj2ota.bk3.ln@beastie.ix.netcom.com>...
>         For purposes of payroll processing, my former employer started the 
> week on Saturday.

If we lend credence to anything ever done by any company's payroll
department, we're going to be awfully confused indeed (and rather
hungry too, I'd wadger).

Re: calenday (was Re: IBM Acquires Rational Ada

[Wes Groleau]

Robert A Duff wrote:
> I believe it calls the seventh day "sabbath".

That it does.  But to insist that our Saturday
is exactly a multiple of seven days from that
Sabbath is to insist that the Jews never lost count
through all their dispersions and returnings.
Or anyone else before or since.

Which I suppose is possible.

Personally, I believe Noah lost count after
about eighty days on the ark.  :-)

Re: calenday (was Re: IBM Acquires Rational Ada

[Dennis Lee Bieber]

Ted Dennison fed this fish to the penguins on Wednesday 18 December 
2002 06:52 am:

> 
> If we lend credence to anything ever done by any company's payroll
> department, we're going to be awfully confused indeed (and rather
> hungry too, I'd wadger).

        True -- when they implemented a scheme to make every other Friday part 
of a 3-day weekend, the start of the week became "noon" on Friday.

day     M  Tu  W  Th  Fam | Fpm  M  Tu  W  Th  F
hours   9   9  9   9   4  |  4                      44
                          |      9   9  9   9  -    36
                       40 |                    40
-- 
 > ============================================================== <
 >   wlfraed@ix.netcom.com  | Wulfraed  Dennis Lee Bieber  KD6MOG <
 >      wulfraed@dm.net     |       Bestiaria Support Staff       <
 > ============================================================== <
 >        Bestiaria Home Page: http://www.beastie.dm.net/         <
 >            Home Page: http://www.dm.net/~wulfraed/             <

Re: calenday (was Re: IBM Acquires Rational Ada

[Larry Kilgallen]

In article <3E00BF83.3060301@most.ftw.rsc.raytheon.com>, Wes Groleau <wwgrol@most.ftw.rsc.raytheon.com> writes:
> Robert A Duff wrote:
>> I believe it calls the seventh day "sabbath".
> 
> That it does.  But to insist that our Saturday
> is exactly a multiple of seven days from that
> Sabbath is to insist that the Jews never lost count
> through all their dispersions and returnings.

Dispersions are good, because you get to compare two independent
time sources.  There are no Talmudic calendar disputes recorded,
are there ?

So I suppose we can conclude that no group of Jews in the Diaspora
spent any significant portion of time moving at anything close to
the speed of light :-)

Locale package (Was: calenday)

[Jacob Sparre Andersen]

Karel Miklav wrote:

> Is there a package or something to work with locales in Ada (like in C, 
> you know :) )?

Not in the standard libraries.

GtkAda comes with a package that is equivalent to (or a 
binding to) GNU Gettext.

Greetings,

Jacob
-- 
"Preserve wildlife, pickle a duck."