# GetHashCode()

> Computes a hash code for this instance.

## Definition

* **Type:** Method
* **Namespace:** [Unity.Entities](/engine/7000.0/script-reference/unity/entities.md)
* **Assembly:** UnityEngine.EntitiesModule

```csharp
public override int GetHashCode()
```

### Returns

| Type                                                       | Description                                             |
| ---------------------------------------------------------- | ------------------------------------------------------- |
| [int](https://learn.microsoft.com/dotnet/api/system.int32) | A hash code derived from the mask's identifying fields. |