Returns the index of the object in the ordered set that passes a test in a given block.
- iOS 5.0+
- macOS 10.7+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
The block to apply to elements in the ordered set.
The block takes three arguments:
The element in the ordered set.
The index of the element in the ordered set.
A reference to a Boolean value. The block can set the value to
YESto stop further processing of the set. The
stopargument is an out-only argument. You should only ever set this value to
YESwithin the block.
The index of the corresponding value in the ordered set that passes the test specified by predicate. If no objects in the ordered set pass the test, returns NSNotFound.