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

# compactMap(_:)

## Declaration

```swift
func compactMap<T>(_ transform: (Output) -> T?) -> Optional<T>.Publisher
```

## See Also

### Filtering elements

- [filter(_:)](combine/just/filter(_:).md)
- [removeDuplicates()](combine/just/removeduplicates().md)
- [removeDuplicates(by:)](combine/just/removeduplicates(by:).md)
- [tryRemoveDuplicates(by:)](combine/just/tryremoveduplicates(by:).md)
- [replaceEmpty(with:)](combine/just/replaceempty(with:).md)
- [replaceError(with:)](combine/just/replaceerror(with:).md)