Re: More DateMath problems

This WebDNA talk-list message is from

1997

It keeps the original formatting. numero = 13770
interpreted = N
texte = I see what's happening and can understand how it might look like a bug, butI don't think it is. Here's why. The code in WebCatalog sees the 0000 forthe year and/or the 00 for the day and assumes the date in question isbeing added or subtracted to another date. When this occurs, it does it ona field by field basis so 1 month is either added or subtracted to theother date. This is different than converting the date to the number ofdays since X and adding or subtracting that. If you were to do that, thenyou would add a fixed number of days, 31 lets say, and the resulting datewould not be the same as adding 1 month (sometimes 31 days is a month,sometimes it is a month and a day, sometimes it's a month and 3 days). So,in the example below, the date is being treated as a date (not somethingadded or subtracted). Here's what WebCatalog thinks: The date is 1 dayless that 1/1/0000, which is 12/31/-1. Thus the month is 12. The easy fixis to use 01 instead of 00 so the dummy date is always valid. I hope thishelps.John.>The code:>[FORMAT Days_to_Date %m][MATH]{1/00/0000}[/MATH][/FORMAT]>[FORMAT Days_to_Date %m][MATH]{2/00/0000}[/MATH][/FORMAT]>[FORMAT Days_to_Date %m][MATH]{3/00/0000}[/MATH][/FORMAT]>[FORMAT Days_to_Date %m][MATH]{4/00/0000}[/MATH][/FORMAT]>[FORMAT Days_to_Date %m][MATH]{5/00/0000}[/MATH][/FORMAT]>>Returns:>12>01>02>03>04John A. Hill Pacific Coast Software11770 Bernardo Plaza Ct. #453 * Web tools for Macintosh and WinNT *San Diego, CA 92128 http://www.smithmicro.com Associated Messages, from the most recent to the oldest:

Re: More DateMath problems (Michael Winston 1997)
Re: More DateMath problems (John Hill 1997)
More DateMath problems (Michael Winston 1997)
More DateMath problems (Michael Winston 1997)
Re: More DateMath problems (grichter@panavise.com (Gary Richter) 1997)

I see what's happening and can understand how it might look like a bug, butI don't think it is. Here's why. The code in WebCatalog sees the 0000 forthe year and/or the 00 for the day and assumes the date in question isbeing added or subtracted to another date. When this occurs, it does it ona field by field basis so 1 month is either added or subtracted to theother date. This is different than converting the date to the number ofdays since X and adding or subtracting that. If you were to do that, thenyou would add a fixed number of days, 31 lets say, and the resulting datewould not be the same as adding 1 month (sometimes 31 days is a month,sometimes it is a month and a day, sometimes it's a month and 3 days). So,in the example below, the date is being treated as a date (not somethingadded or subtracted). Here's what WebCatalog thinks: The date is 1 dayless that 1/1/0000, which is 12/31/-1. Thus the month is 12. The easy fixis to use 01 instead of 00 so the dummy date is always valid. I hope thishelps.John.>The code:>[FORMAT Days_to_Date %m][math]{1/00/0000}[/MATH][/FORMAT]>[FORMAT Days_to_Date %m][math]{2/00/0000}[/MATH][/FORMAT]>[FORMAT Days_to_Date %m][math]{3/00/0000}[/MATH][/FORMAT]>[FORMAT Days_to_Date %m][math]{4/00/0000}[/MATH][/FORMAT]>[FORMAT Days_to_Date %m][math]{5/00/0000}[/MATH][/FORMAT]>>Returns:>12>01>02>03>04John A. Hill Pacific Coast Software11770 Bernardo Plaza Ct. #453 * Web tools for Macintosh and WinNT *San Diego, CA 92128 http://www.smithmicro.com John Hill

DOWNLOAD WEBDNA NOW!

Re: More DateMath problems

1997

Top Articles:

Related Readings: