Contents

formIntersection(_:)

Removes the elements of the set that aren’t also in the given sequence.

Declaration

mutating func formIntersection<S>(_ other: S) where Element == S.Element, S : Sequence

Parameters

  • other:

    A sequence of elements. other must be finite.

Discussion

In the following example, the elements of the employees set that are not also members of the neighbors set are removed. In particular, the names "Alicia", "Chris", and "Diana" are removed.

var employees: Set = ["Alicia", "Bethany", "Chris", "Diana", "Eric"]
let neighbors = ["Bethany", "Eric", "Forlani", "Greta"]
employees.formIntersection(neighbors)
print(employees)
// Prints "["Bethany", "Eric"]"

See Also

Combining Sets