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

# contains(_:)

## Declaration

```swift
func contains(_ output: Output) -> Just<Bool>
```

## See Also

### Applying matching criteria to elements

- [contains(where:)](combine/just/contains(where:).md)
- [tryContains(where:)](combine/just/trycontains(where:).md)
- [allSatisfy(_:)](combine/just/allsatisfy(_:).md)
- [tryAllSatisfy(_:)](combine/just/tryallsatisfy(_:).md)