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# indexOfObjectIdentical(to:)

Returns the lowest index whose corresponding array value is identical to a given object.

```
func indexOfObjectIdentical(to anObject: Any) -> Int
```

## Parameters

`anObject`

An object.

## Return Value

The lowest index whose corresponding array value is identical to `anObject`. If none of the objects in the array is identical to `anObject`, returns `NSNotFound`.

## Discussion

Objects are considered identical if their object addresses are the same.

## See Also

[`contains(_:)`](/documentation/Foundation/NSArray/contains(_:))

Returns a Boolean value that indicates whether a given object is present in the array.


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