Returns a partial range up to, but not including, its upper bound.
- Xcode 9.0+
- Swift Standard Library
The upper bound for the range.
Use the prefix half-open range operator (prefix
..<) to create a partial range of any type that conforms to the
Comparable protocol. This example creates a
Partial instance that includes any value less than
You can use this type of partial range of a collection’s indices to represent the range from the start of the collection up to, but not including, the partial range’s upper bound.