[PD-dev] Re: common date format for Pd
Hans-Christoph Steiner
hans at eds.org
Mon Jun 12 18:56:15 CEST 2006
Looking at this page, I am thinking maybe the unified format should
keep the separators:
http://www.w3.org/TR/NOTE-datetime
Complete date plus hours and minutes:
YYYY-MM-DDThh:mmTZD (eg 1997-07-16T19:20+01:00)
Complete date plus hours, minutes and seconds:
YYYY-MM-DDThh:mm:ssTZD (eg 1997-07-16T19:20:30+01:00)
Complete date plus hours, minutes, seconds and a decimal fraction of a
second
YYYY-MM-DDThh:mm:ss.sTZD (eg 1997-07-16T19:20:30.45+01:00)
.hc
On Jun 12, 2006, at 12:47 PM, Hans-Christoph Steiner wrote:
>
> Since Pd only has 19bits of integer resolution, we can't use UNIX
> time within Pd. So I was thinking that perhaps ISO format would
> would well in Pd since its a symbol:
>
> For example:
>
> Today is 2006-06-12. This email was sent written at 12:40:23. All
> of this can be lumped together as 20060612T124023. I am not sure
> if this ISO unified date/time format officially supports fractional
> seconds, but since it does support fractional seconds in the time
> (12:40:23.2342), and the digit positions are fixed, so I think we
> can easily just tack on fractional seconds like this:
> 20060612T124023.2342. I think keeping the "." is preferable since
> ISO 8601 says 12:40:23.2342 can be shorted to 124023.2342, but I
> didn't see mention of 1240232342.
>
> One problem is that ISO 8601 allows you to omit the separators "-"
> and ":", which would then make it a float in Pd, and therefore it
> would be truncated to 6 digits. So we couldn't support that.
>
> Here's a page all about ISO 8601 date/time formats:
>
> http://www.cl.cam.ac.uk/~mgk25/iso-time.html#time
>
> Thoughts? Comments? Flames? ;)
>
> .hc
>
> ----------------------------------------------------------------------
> --
>
> I have the audacity to believe that peoples everywhere can have
> three meals a day for their bodies, education and culture for their
> minds, and dignity, equality and freedom for their spirits. -
> Martin Luther King, Jr.
>
>
------------------------------------------------------------------------
Terrorism is not an enemy. It cannot be defeated. It's a tactic.
It's about as sensible to say we declare war on night attacks and
expect we're going to win that war. We're not going to win the war
on terrorism. - retired U.S. Army general, William Odom
More information about the Pd-dev
mailing list