Re: Dates (1-day resolution) redux
Re: Dates (1-day resolution) redux
- Subject: Re: Dates (1-day resolution) redux
- From: Ramsey Lee Gurley <email@hidden>
- Date: Wed, 11 Aug 2010 21:14:45 -0400
On Aug 11, 2010, at 8:20 PM, Paul Hoadley wrote:
> Hi Ramsey,
>
> On 12/08/2010, at 9:19 AM, Ramsey Lee Gurley wrote:
>
>> Perhaps this is a stupid question, but is there any reason a GregorianCalendar wouldn't work? It seems it only needs a simple subclass providing factory methods for an EOAttribute prototype.
>
> GregorianCalendar has millisecond resolution and is timezone-aware, so I don't know that it's going to be an improvement on NSTimestamp. Is it?
>
>
> --
> Paul.
http://developer.apple.com/legacy/mac/library/documentation/InternetWeb/Reference/WO542Reference/com/webobjects/foundation/NSTimestamp.html
If I'm wrong, I blame the Apple docs for misleading me (^_^)
I believe the difference is that yes, GregorianCalendar _is_ timezone aware. NSTimestamp is not. NSTimestamp's getTime() value is fixed when the timestamp is created. If you then adjust your timezone frame of reference, the time does not adjust with you. GregorianCalendar is the opposite. It has fixed gregorian values (calendar day, month, year, etc) and the getTime() value fluctuates based on the timezone you set on it.
Ramsey
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