# RemoveRangeSwapBack(int, int)

> Copies the last "N" elements of this list to a range in this list. Decrements the length by "N".

## Definition

* **Type:** Method
* **Namespace:** [Unity.Collections](/engine/6000.7/script-reference/unity/collections.md)
* **Assembly:** UnityEngine.ManagedKernelModule

```csharp
public void RemoveRangeSwapBack(int index, int count)
```

### Parameters

**** (\[int]\(https\://learn.microsoft.com/dotnet/api/system.int32)): The index of the first element to overwrite.**** (\[int]\(https\://learn.microsoft.com/dotnet/api/system.int32)): The number of elements to copy and remove.

### Remarks

Copies the last `count` elements to the indexes `index` up to `index + count`.

Useful as a cheap way to remove elements from a list when you don't care about preserving order.