---
title: init()
framework: foundation
role: symbol
role_heading: Initializer
path: foundation/indexset/init()
---

# init()

Initializes an empty index set.

## Declaration

```swift
init()
```

## See Also

### Creating an Index Set

- [init(integer:)](foundation/indexset/init(integer:).md)
- [init(integersIn:)](foundation/indexset/init(integersin:)-40cz3.md)