Instance Method

update(with:)

Inserts the given element into the set.

Declaration

@discardableResult mutating func update(with newMember: AnchoringComponent.Target.Classification) -> AnchoringComponent.Target.Classification?

Return Value

The intersection of [newMember] and the set if the intersection was nonempty; otherwise, nil.

Discussion

If newMember is not contained in the set but subsumes current members of the set, the subsumed members are returned.

var options: ShippingOptions = [.secondDay, .priority]
let replaced = options.update(with: .express)
print(replaced == .secondDay)
// Prints "true"

See Also

Option Set Conformance

var isEmpty: Bool

A Boolean value that indicates whether the set has no elements.

func contains(AnchoringComponent.Target.Classification) -> Bool

Returns a Boolean value that indicates whether a given element is a member of the option set.

func formIntersection(AnchoringComponent.Target.Classification)

Removes all elements of this option set that are not also present in the given set.

func formSymmetricDifference(AnchoringComponent.Target.Classification)

Replaces this set with a new set containing all elements contained in either this set or the given set, but not in both.

func formUnion(AnchoringComponent.Target.Classification)

Inserts the elements of another set into this option set.

func intersection(AnchoringComponent.Target.Classification) -> AnchoringComponent.Target.Classification

Returns a new option set with only the elements contained in both this set and the given set.

func isDisjoint(with: AnchoringComponent.Target.Classification) -> Bool

Returns a Boolean value that indicates whether the set has no members in common with the given set.

func isStrictSubset(of: AnchoringComponent.Target.Classification) -> Bool

Returns a Boolean value that indicates whether this set is a strict subset of the given set.

func isStrictSuperset(of: AnchoringComponent.Target.Classification) -> Bool

Returns a Boolean value that indicates whether this set is a strict superset of the given set.

func isSubset(of: AnchoringComponent.Target.Classification) -> Bool

Returns a Boolean value that indicates whether the set is a subset of another set.

func isSuperset(of: AnchoringComponent.Target.Classification) -> Bool

Returns a Boolean value that indicates whether the set is a superset of the given set.

func subtract(AnchoringComponent.Target.Classification)

Removes the elements of the given set from this set.

func subtracting(AnchoringComponent.Target.Classification) -> AnchoringComponent.Target.Classification

Returns a new set containing the elements of this set that do not occur in the given set.

func symmetricDifference(AnchoringComponent.Target.Classification) -> AnchoringComponent.Target.Classification

Returns a new option set with the elements contained in this set or in the given set, but not in both.

func union(AnchoringComponent.Target.Classification) -> AnchoringComponent.Target.Classification

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