On Dec 20, 2008, at 6:15 AM, Jacob Rhoden wrote:
How do you sort an NSMutableArray, when the difference between the
two objects is determined by information not contained completely
within the objects themselves. ie in Java you can implement a
Comparator that takes two objects to compare then. Is this similar
in Cocoa?
ie in this case I need to apply a mathematical algorithm using
information from each object to determine which one is greater than
the other.
See sortUsingSelector:
What I then personally do is to create a "Sorting" category on
whatever object it is that the collection will contain. For example:
@interface MyObject (Sorting)
- (NSComparisonResult)myCustomCompare:(MyObject*)rhs;
@end
Then, LHS is self and RHS is the param coming in.
___________________________________________________________
Ricky A. Sharp mailto:rsh...@instantinteractive.com
Instant Interactive(tm) http://www.instantinteractive.com
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