---
title: "init(index:)"
framework: foundation
role: symbol
role_heading: Initializer
path: "foundation/nsindexset/init(index:)"
---

# init(index:)

Initializes an allocated NSIndexSet object with an index.

## Declaration

```swift
convenience init(index value: Int)
```

## Parameters

- `value`: An index. Must be in the range 0 .. NSNotFound - 1.

## Return Value

Return Value Initialized NSIndexSet object with index.

## See Also

### Creating Index Sets

- [init(indexesIn:)](foundation/nsindexset/init(indexesin:).md)
- [init(indexSet:)](foundation/nsindexset/init(indexset:).md)