---
title: "subtracting(_:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/set/subtracting(_:)-2qge3"
---

# subtracting(_:)

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

## Declaration

```swift
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

Return Value A new set.

## Discussion

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

- [union(_:)](swift/set/union(_:).md)
- [formUnion(_:)](swift/set/formunion(_:).md)
- [intersection(_:)](swift/set/intersection(_:)-1zh8f.md)
- [intersection(_:)](swift/set/intersection(_:)-6uts9.md)
- [formIntersection(_:)](swift/set/formintersection(_:).md)
- [symmetricDifference(_:)](swift/set/symmetricdifference(_:).md)
- [formSymmetricDifference(_:)](swift/set/formsymmetricdifference(_:)-22p0m.md)
- [formSymmetricDifference(_:)](swift/set/formsymmetricdifference(_:)-5u38b.md)
- [subtract(_:)](swift/set/subtract(_:)-8gc48.md)
- [subtract(_:)](swift/set/subtract(_:)-7cd3y.md)
- [subtracting(_:)](swift/set/subtracting(_:)-3n4lc.md)