Returns an index that is the specified distance from the given index.
- iOS 7.0+
- macOS 10.9+
- tvOS 9.0+
- watchOS 2.0+
- Xcode 8.3+
A valid index of the collection.
The distance to offset
An index offset by
distance from the index
distance is positive, this is the same value as the result of
distance calls to
distance is negative, this is the same value as the result of
abs(distance) calls to
The following example obtains an index advanced four positions from an array’s starting index and then prints the element at that position.
The value passed as
distance must not offset
i beyond the bounds of the collection.