---
title: "contains(_:)"
framework: paperkit
role: symbol
role_heading: Instance Method
path: "paperkit/featureset/contains(_:)"
---

# contains(_:)

Returns a Boolean value that indicates whether the given feature exists in the set.

## Declaration

```swift
func contains(_ feature: FeatureSet.Feature) -> Bool
```

## Parameters

- `feature`: A feature to look for in the set.

## Return Value

Return Value true if member exists in the set; otherwise, false.

## See Also

### Checking features

- [isSubset(of:)](paperkit/featureset/issubset(of:).md)
- [insert(_:)](paperkit/featureset/insert(_:).md)
- [remove(_:)](paperkit/featureset/remove(_:).md)