Re: Finding the largest value in an NSTreeController?
Re: Finding the largest value in an NSTreeController?
- Subject: Re: Finding the largest value in an NSTreeController?
- From: Rick Mann <email@hidden>
- Date: Sat, 31 May 2008 13:12:16 -0700
On May 31, 2008, at 12:05:58, I. Savant wrote:
1 - Create a fetch request for your desired entity.
2 - Create a sort descriptor for the key whose max value you're
interested in.
3 - Set the fetch request's sort descriptor to the above.
4 - Create any predicates needed for filtration (ie, whatever you
may or may not have used in the tree controller).
5 - Set the fetch request's predicate to the above if any.
6 - Execute the fetch request and get the last (or first) object of
the results (checking for errors, minding the set-versus-array
gotchas, etc.).
Wow, really? No way to just get at all the items in the tree
controller with some key path, then use @max? It seems that this would
be possible with an NSArray:
http://developer.apple.com/documentation/Cocoa/Conceptual/KeyValueCoding/Concepts/ArrayOperators.html#/
/apple_ref/doc/uid/20002176
TIA,
--
Rick
_______________________________________________
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