Instance Methodswift 6.0.1Swift
isStrictSubset(of:)
Returns a Boolean value that indicates whether this set is a strict subset of the given set.
func isStrictSubset(of other: Self) -> Bool Parameters
- other
A set of the same type as the current set.
Returns
true if the set is a strict subset of other; otherwise, false.
Set A is a strict subset of another set B if every member of A is also a member of B and B contains at least one element that is not a member of A.
let employees: Set = ["Alicia", "Bethany", "Chris", "Diana", "Eric"]
let attendees: Set = ["Alicia", "Bethany", "Diana"]
print(attendees.isStrictSubset(of: employees))
// Prints "true"
// A set is never a strict subset of itself:
print(attendees.isStrictSubset(of: attendees))
// Prints "false"Other members in extension
Type members
init<S>(S) Creates a new set from a finite sequence of items.
Instance members
var isEmpty: BoolA Boolean value that indicates whether the set has no elements.
func isDisjoint(with: Self) -> Bool Returns a Boolean value that indicates whether the set has no members in common with the given set.
func isStrictSuperset(of: Self) -> Bool Returns a Boolean value that indicates whether this set is a strict superset of the given set.
func isSubset(of: Self) -> Bool Returns a Boolean value that indicates whether the set is a subset of another set.
func isSuperset(of: Self) -> Bool Returns a Boolean value that indicates whether the set is a superset of the given set.
func subtract(Self) Removes the elements of the given set from this set.
func subtracting(Self) -> Self Returns a new set containing the elements of this set that do not occur in the given set.