# Common.ReadWrite

> Specifies whether a prefetch operation is for reading or writing.

## Definition

* **Type:** Enum
* **Namespace:** [Unity.Burst.Intrinsics](/engine/6000.7/script-reference/unity/burst/intrinsics.md)
* **Assembly:** UnityEngine.BurstModule

```csharp
public enum Common.ReadWrite
```

## Fields

| Value                                                                                     | Description           |
| ----------------------------------------------------------------------------------------- | --------------------- |
| [Read](/engine/6000.7/script-reference/unity/burst/intrinsics/common/readwrite/read.md)   | Prefetch for reading. |
| [Write](/engine/6000.7/script-reference/unity/burst/intrinsics/common/readwrite/write.md) | Prefetch for writing. |