---
title: "contains(_:)"
framework: foundation
role: symbol
role_heading: Instance Method
path: "foundation/nsindexset/contains(_:)-5j2kh"
---

# contains(_:)

Indicates whether the receiving index set contains a superset of the indexes in another index set.

## Declaration

```swift
func contains(_ indexSet: IndexSet) -> Bool
```

## Parameters

- `indexSet`: Index set being inquired about.

## Return Value

Return Value true when the receiving index set contains a superset of the indexes in indexSet, false otherwise.

## See Also

### Querying Index Sets

- [contains(_:)](foundation/nsindexset/contains(_:)-bb19.md)
- [contains(in:)](foundation/nsindexset/contains(in:).md)
- [intersects(in:)](foundation/nsindexset/intersects(in:).md)
- [count](foundation/nsindexset/count.md)
- [countOfIndexes(in:)](foundation/nsindexset/countofindexes(in:).md)
- [index(passingTest:)](foundation/nsindexset/index(passingtest:).md)
- [indexes(passingTest:)](foundation/nsindexset/indexes(passingtest:).md)
- [index(options:passingTest:)](foundation/nsindexset/index(options:passingtest:).md)
- [indexes(options:passingTest:)](foundation/nsindexset/indexes(options:passingtest:).md)
- [index(in:options:passingTest:)](foundation/nsindexset/index(in:options:passingtest:).md)
- [indexes(in:options:passingTest:)](foundation/nsindexset/indexes(in:options:passingtest:).md)