Contents

subtracting(_:)

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

Declaration

func subtracting<S>(_ other: S) -> Set<Element> where Element == S.Element, S : Sequence

Parameters

  • other:

    A sequence of elements. other must be finite.

Return Value

A new set.

Discussion

In the following example, the nonNeighbors set is made up of the elements of the employees set that are not elements of neighbors:

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

See Also

Combining Sets