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# init(index:)

Initializes an allocated [`NSIndexSet`](/documentation/Foundation/NSIndexSet) object with an index.

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

## Parameters

`value`

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

## Return Value

Initialized [`NSIndexSet`](/documentation/Foundation/NSIndexSet) object with `index`.

## See Also

[`+  indexSetWithIndex:`](/documentation/Foundation/NSIndexSet/indexSetWithIndex:)

Creates an index set with an index.


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