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# class_getSuperclass(_:)

Returns the superclass of a class.

```
func class_getSuperclass(_ cls: AnyClass?) -> AnyClass?
```

## Parameters

`cls`

A class object.

## Return Value

The superclass of the class, or `Nil` if `cls` is a root class, or `Nil` if `cls` is `Nil`.

## Discussion

You should usually use `NSObject`’s [`superclass()`](/documentation/ObjectiveC/NSObject-swift.class/superclass()) method instead of this function.

---

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