Detect the last element when using NSFastEnumeration?

Is it possible t开发者_如何学Goo detect the last item when using NSFastEnumeration?

for(NSString *str in someArray){

  //Can I detect if I'm up to the last string?

}

Is it possible to detect the last item when using NSFastEnumeration?

Not with 100% accuracy (or by limiting the array contents to being entirely unique pointers so that pointer comparison works as discussed in another question) without also doing a bunch of work that leads to just doing it the old way.

Note that if you can target 4.0+, you can use enumerateWithBlock: that gives both the item and the index. It is as fast or faster than fast enumeration, even.

I think the only way is the old fashioned way, something like:

    NSUInteger count = [someArray count];
    for (NSString *str in someArray) {
         if (--count==0) {
              //this is the last element
         }
    }

At the end of the loop, "str" will still be pointing to the last element. What is it you need to do?