Re: Keeping NSTimeInterval updated with current time
Re: Keeping NSTimeInterval updated with current time
- Subject: Re: Keeping NSTimeInterval updated with current time
- From: PCWiz <email@hidden>
- Date: Mon, 2 Nov 2009 17:06:05 -0700
postedTime is a static date object. timeInterval is the number of
seconds from the postedTime TO the current time, so timeInterval is
variable.
I haven't observed a performance problem on my machine, I'm just
considering less powerful computers and how they might handle it, but
if thats the way to do it then I'll go with that :-)
On 2009-11-02, at 4:24 PM, Sean McBride wrote:
On 11/2/09 4:10 PM, PCWiz said:
In my model class I have 2 properties, timeInterval and postedTime.
postedTime contains a static date. timeInterval uses the
timeIntervalSinceNow method to find the number of seconds that has
passed by since the date in postedTime.
What do you mean 'static'? If it never changes, why do you model it?
What I want to do is around every 5 minutes, update the timeInterval
to be consistent with the current time. The problem is that I need to
do this update for a large number of instances of the object. One way
I could think to do this would be to enumerate through the array
containing the objects every 5 minutes and just set the timeInterval
property. But is there a more efficient way to do this?
How many is "large"? If you need to change them all, then you need to
change them all (ie you'll have to enumerate them all). Have you
observed a performance problem because of this?
--
____________________________________________________________
Sean McBride, B. Eng email@hidden
Rogue Research www.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
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