Operator

...(_:)

Returns a partial range extending upward from a lower bound.

Declaration

postfix static func ... (minimum: Unicode.Scalar) -> PartialRangeFrom<Unicode.Scalar>

Parameters

minimum

The lower bound for the range.

Discussion

Use the postfix range operator (postfix ...) to create a partial range of any type that conforms to the Comparable protocol. This example creates a PartialRangeFrom<Double> instance that includes any value greater than or equal to 5.0.

let atLeastFive = 5.0...

atLeastFive.contains(4.0)     // false
atLeastFive.contains(5.0)     // true
atLeastFive.contains(6.0)     // true

You can use this type of partial range of a collection’s indices to represent the range from the partial range’s lower bound up to the end of the collection.

let numbers = [10, 20, 30, 40, 50, 60, 70]
print(numbers[3...])
// Prints "[40, 50, 60, 70]"

See Also

Creating Ranges of Scalars

static func ... (Unicode.Scalar) -> PartialRangeThrough<Unicode.Scalar>

Returns a partial range up to, and including, its upper bound.

static func ... (Unicode.Scalar, Unicode.Scalar) -> ClosedRange<Unicode.Scalar>

Returns a closed range that contains both of its bounds.

static func ..< (Unicode.Scalar) -> PartialRangeUpTo<Unicode.Scalar>

Returns a partial range up to, but not including, its upper bound.

static func ..< (Unicode.Scalar, Unicode.Scalar) -> Range<Unicode.Scalar>

Returns a half-open range that contains its lower bound but not its upper bound.