Re: Date math problem in Leopard
Re: Date math problem in Leopard
- Subject: Re: Date math problem in Leopard
- From: "Mark J. Reed" <email@hidden>
- Date: Sat, 15 Mar 2008 11:25:30 -0400
Oh, sorry, was misremembering the conclusion of the earlier thread. I
shut up now.
Thanks again, Mr. Nebel.
On 3/14/08, Christopher Nebel <email@hidden> wrote:
> Uh, because Leopard has the conversion bug and Tiger doesn't? It's a
> known problem -- adding more than 2^30 seconds to a date will give a
> bogus result. We have a fix, but don't ask me when it'll ship,
> because I can't tell you.
>
> --Chris Nebel
> AppleScript Engineering
>
> On Mar 14, 2008, at 5:55 PM, Mark J. Reed wrote:
>
> > This looks like the float conversion issue again - 1056 weeks is more
> > than 2^30 seconds - but I don't know why it would work under Tiger and
> > not Leopard.
> >
> > On 3/14/08, Jeff Jungblut <email@hidden> wrote:
> >> I have a script that's been working for years in Tiger, but in
> >> Leopard it
> >> gives incorrect results. It calculates the date for a weekly
> >> magazine issue
> >> based on the issue number and the date of the first issue, so it
> >> can tell
> >> Quark to update the date in all the master pages of the docs that
> >> make up
> >> the magazine. Here's part of the code:
> >>
> >> set firstIssue to date "Thursday, December 24, 1987 12:00:00
> >> AM"
> >> set newDate to firstIssue + ((newIssue) * weeks)
> >> log newIssue -- value is 1056 to be published Mar. 20, 2008
> >> log (newDate as text)
> >>
> >> Correct results under Tiger:
> >>
> >> 2008-03-14 15:30:26.952 IssueDater[356] "1056"
> >> 2008-03-14 15:30:26.953 IssueDater[356] "Thursday, March 20, 2008
> >> 12:00:00
> >> AM"
> >>
> >> Results under Leopard (note each run produces a different result
> >> for the
> >> time component):
> >>
> >> 2008-03-14 15:36:16.300 IssueDater [222:10b] "1056"
> >> 2008-03-14 15:36:16.305 IssueDater [222:10b] "Tuesday, January 5,
> >> 1988
> >> 10:45:39 PM"
> >> 2008-03-14 15:36:31.503 IssueDater [222:10b] "1056"
> >> 2008-03-14 15:36:31.515 IssueDater [222:10b] "Tuesday, January 5,
> >> 1988
> >> 10:35:17 PM"
> >> 2008-03-14 15:36:39.170 IssueDater [222:10b] "1056"
> >> 2008-03-14 15:36:39.188 IssueDater [222:10b] "Tuesday, January 5,
> >> 1988
> >> 10:25:03 PM"
> >> 2008-03-14 15:36:43.167 IssueDater [222:10b] "1056"
> >> 2008-03-14 15:36:43.168 IssueDater [222:10b] "Tuesday, January 5,
> >> 1988
> >> 10:14:49 PM"
> >> 2008-03-14 15:36:44.763 IssueDater [222:10b] "1056"
> >> 2008-03-14 15:36:44.765 IssueDater [222:10b] "Tuesday, January 5,
> >> 1988
> >> 10:45:21 PM"
> >> 2008-03-14 15:36:46.503 IssueDater [222:10b] "1056"
> >> 2008-03-14 15:36:46.505 IssueDater [222:10b] "Tuesday, January 5,
> >> 1988
> >> 10:35:07 PM"
> >>
> >> Is this a bug in AppleScript under Leopard or has the date object
> >> changed in
> >> some way to break my script? Is there a workaround? Thanks for
> >> any help.
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--
Mark J. Reed <email@hidden>
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