---
title: "isStrictSuperset(of:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/setalgebra/isstrictsuperset(of:)"
---

# isStrictSuperset(of:)

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

## Declaration

```swift
func isStrictSuperset(of other: Self) -> Bool
```

## Parameters

- `other`: A set of the same type as the current set.

## Return Value

Return Value true if the set is a strict superset of other; otherwise, false.

## Discussion

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

// A set is never a strict superset of itself: print(employees.isStrictSuperset(of: employees)) // Prints "false"

## See Also

### Comparing Sets

- [isStrictSubset(of:)](swift/setalgebra/isstrictsubset(of:).md)