A Boolean value indicating whether the range contains no elements.
var isEmpty: Bool { get }An empty Range instance has equal lower and upper bounds.
let empty: Range = 10..<10
print(empty.isEmpty)
// Prints "true"import Swift@frozen struct Range<Bound> where Bound : ComparableA half-open interval from a lower bound up to, but not including, an upper bound.
@frozen struct BoolA value type whose instances are either true or false.
init(uncheckedBounds bounds: (lower: Bound, upper: Bound)) Creates an instance with the given bounds.
let lowerBound: BoundThe range’s lower bound.
let upperBound: BoundThe range’s upper bound.
func contains(_ element: Bound) -> Bool Returns a Boolean value indicating whether the given element is contained within the range.