Contents

isStrictSuperset(of:)

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

Declaration

func isStrictSuperset<S>(of possibleStrictSubset: S) -> Bool where Element == S.Element, S : Sequence

Parameters

  • possibleStrictSubset:

    A sequence of elements. possibleStrictSubset must be finite.

Return Value

true if the set is a strict superset of possibleStrictSubset; otherwise, false.

Discussion

Set A is a strict superset of another set B if every member of B is also a member of A and A contains at least one element that is not a member of B.

let employees: Set = ["Alicia", "Bethany", "Chris", "Diana", "Eric"]
let attendees = ["Alicia", "Bethany", "Diana"]
print(employees.isStrictSuperset(of: attendees))
// Prints "true"
print(employees.isStrictSuperset(of: employees))
// Prints "false"

See Also

Comparing Sets