# AsReadOnlySpan()

> Returns a read-only span of all hierarchy flattened nodes in the hierarchy flattened.

## Definition

* **Type:** Method
* **Namespace:** [Unity.Hierarchy](/engine/6000.7/script-reference/unity/hierarchy.md)
* **Assembly:** UnityEngine.HierarchyCoreModule

```csharp
public ReadOnlySpan<HierarchyFlattenedNode> AsReadOnlySpan()
```

### Returns

| Type                                                                                                  | Description                                    |
| ----------------------------------------------------------------------------------------------------- | ---------------------------------------------- |
| [ReadOnlySpan\<HierarchyFlattenedNode>](https://learn.microsoft.com/dotnet/api/system.readonlyspan-1) | A read-only span of hierarchy flattened nodes. |