remove object at NSMutableArray in range

Question

I am trying to remove objects at array starting at index 5 to the end of the list. I have a for loop to do this, however now I discovered

 - (void)removeObject:(id)anObject inRange:(NSRange)aRange

The question is what is the anObject here? I only need range as far as I know

DHamrick · Accepted Answer · 2012-06-01 03:43:11Z

27

removeObject:inRange: deletes an object within a certain range. This method would be useful if you wanted delete the string @"Hello World" only if it is one of the first 5 elements.

It sounds like what you are trying to do is delete all objects after the 5th element. If that is what you are trying to do, you should use the removeObjectsInRange: method. For example:

 NSRange r;
 r.location = 5;
 r.length = [someArray count]-5;

 [someArray removeObjectsInRange:r];

answered Jun 1, 2012 at 3:43

DHamrick

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bw1024 Over a year ago

You can also use the NSMakeRange(location, length) function to specify the range.

David Gelhar · Accepted Answer · 2012-06-01 03:42:04Z

3

You want

- (void)removeObjectsInRange:(NSRange)aRange

Removes from the array each of the objects within a given range.

answered Jun 1, 2012 at 3:42

David Gelhar

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1 Comment

ArtOfWarfare Over a year ago

+1 - Xcode's quick documentation on the side only mentioned that NSMutableOrderedSet had this as a method, so I didn't think it was the right method to use. But then I checked NSMutableArray's documentation and saw it actually had a method with the exact same signature.

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