Can you fast enumerate a NSIndexSet? if not, what's the best way to enumerate the items in the set?

I converted an NSIndexSet to an [Int] array using the answer at https://stackoverflow.com/a/28964059/6481734 I need to do essentially the opposite, turning the same kind of array back into an NSInd...

This feels like a dumb question because it seems to me like my use case must be quite common. Say I want to represent a sparse set of indexes with an NSIndexSet (which is of course what it's for)....

I'm getting the select items from a table view with: NSIndexSet *selectedItems = [aTableView selectedRowIndexes]; what's the best way to get the indexes in a NSArray object?

In my unit testing I was looking at some boundary conditions and my tests kept failing. I tracked it back to enumerating through an index set when its indexes extend all the way to NSNotFound-1 (th...

I have a collection of int64_t values that I need to make an index set out of. I previously have used: NSIndexSet *set = [NSIndexSet indexSetWithRange:NSMakeRange(location, length)]; to make in...

NSArray has useful methods to find objects for specified indexes // To find objects by indexes - (id)objectAtIndex:(NSUInteger)index - (NSArray *)objectsAtIndexes:(NSIndexSet *)indexes // To find...

In Objective-C, my program opens a window and displays a table. I want to have a specified row of the table highlighted. How do I do this? I seem to need the code [myTableView selectRowIndexes:(...

I'm a bit new to Cocoa and I was reading about NSIndexSet. Why is it necessary? It seems to me that NSIndexSet is nothing but a NSSet of integers, is that right? What's the purpose of creating a se...

I want to select some objects from an array. Therefore I'm using begin and end indexes of my selection. NSLog(@"start:%d\nend:%d", startIndex, endIndex); NSIndexSet *myIndexes = [NSIndexSet index...