Re: Displaying time
Re: Displaying time
- Subject: Re: Displaying time
- From: Graham Cox <email@hidden>
- Date: Fri, 22 Aug 2008 23:28:52 +1000
On 22 Aug 2008, at 10:55 pm, Ron Fleckner wrote:
Sorry, my question was very badly put. I've already apologised to
two other answerers. I should have said: Is there a better way -
other than using an NSTimer - to update the clock? That is, how
does the system clock do it?
I think now that this is not strictly a Cocoa question.
Using a timer isn't too bad. Running at two updates per second should
be acceptable since you're sampling at twice the highest "event"
frequency. You might want to go a bit faster and maybe at a slightly
odd multiple of one second to make sure you don't end up with a
constant half-second lag.
The timer should compare the previous second with the current second
and only update the display if it's changed. That way your timer isn't
wasting cycles redrawing the same thing every time, but only when it
changes.
hth,
Graham
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden