Re: NSComparator not adequate?
Re: NSComparator not adequate?
- Subject: Re: NSComparator not adequate?
- From: Chuck Hill <email@hidden>
- Date: Mon, 29 Sep 2003 22:33:48 -0700
Use two NSComparator sub-classes, one for time and one for way points.
Chuck
At 10:28 PM 29/09/2003 -0700, Robert A. Decker wrote:
>I'm converting an app from 4.5.1 to 5.2.1. I used NSSelector to sort
>arrays on a number of variables. I can't quite figure out how to do this
>with the new NSComparator system.
>
>For example, if I have a class WayPoint that describes a geographic
>location at a specific instance in time, I may want to sort a group of
>waypoints based on time, or I may want to sort a group of WayPoints based
>on their coordinates.
>
>With NSSelector I'd write two methods (compareUsingTime and
>compareUsingCoordinates) and sort arrays using an NSSelector (NSSelector
>sel = new NSSelector("compareUsingTime");).
>
>However, with this NSComparator system I can only use one method -
>compare. Also, I don't think EOSortOrdering will work for me because these
>objects (WayPoint) aren't actually enterprise objects.
>
>Any suggestions?
>
>thanks,
>Robert A. Decker
>
>http://www.robdecker.com/
>
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>
--
Chuck Hill email@hidden
Global Village Consulting Inc. http://www.global-village.net
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