# this[]

> Access the bit at bit-memory-address (first bit) + index

## Definition

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

## this\[int]

```csharp
public bool this[int index] { get; set; }
```

### Parameters

**** (\[int]\(https\://learn.microsoft.com/dotnet/api/system.int32)): Index of the bit to access

### Returns

| Type                                                          | Description        |
| ------------------------------------------------------------- | ------------------ |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | true if bit is set |