# operator !=(SystemTypeIndex, SystemTypeIndex)

> SystemTypeIndex instances are equal if they refer to the same system type.

## Definition

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

```csharp
public static bool operator !=(SystemTypeIndex lhs, SystemTypeIndex rhs)
```

### Parameters

**** (\[SystemTypeIndex]\(/engine/7000.0/script-reference/unity/entities/systemtypeindex)): [SystemTypeIndex](/engine/7000.0/script-reference/unity/entities/systemtypeindex.md) on left side of the equality expression.**** (\[SystemTypeIndex]\(/engine/7000.0/script-reference/unity/entities/systemtypeindex)): [SystemTypeIndex](/engine/7000.0/script-reference/unity/entities/systemtypeindex.md) on right side of the equality expression.

### Returns

| Type                                                          | Description                          |
| ------------------------------------------------------------- | ------------------------------------ |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | True, if both TypeIndices are equal. |