Instance Method

union(_:)

Returns a new option set of the elements contained in this set, in the given set, or in both.

Declaration

func union(_ other: Self) -> Self

Parameters

other: An option set.

Return Value

A new option set made up of the elements contained in this set, in other, or in both.

Discussion

This example uses the union(_:) method to add two more shipping options to the default set.

let defaultShipping = ShippingOptions.standard
let memberShipping = defaultShipping.union([.secondDay, .priority])
print(memberShipping.contains(.priority))
// Prints "true"