Re: NSOperationQueue
Re: NSOperationQueue
- Subject: Re: NSOperationQueue
- From: Charles Srstka <email@hidden>
- Date: Sat, 02 Jun 2012 12:42:45 -0500
On Jun 2, 2012, at 12:32 PM, Markus Spoettl wrote:
>> Who said anything about order?
>
> The OP did:
>
>> Is there a way to add operations to the queue so that they "jump the queue" ahead of any operations that are not running and have not been run yet?
That statement isn’t expressing a desire for strict LIFO order; he just wants some operations to jump ahead of the rest. This can be done by giving those operations a higher priority.
If I have eight operations A, B, C, D, E, F, G, H, and I want A, B and C to run first (because they correspond to on-screen objects), then I don’t really care if the order is:
ABCDEFGH
CBAHGFED
BACFDHEG
etc.
These orders are all equivalent in practical terms. What’s important is that A, B, and C get finished before D, E, F, G, and H.
Charles
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