# operator ==(PortReference, PortReference)

> Compares two PortReference values for equality.

## Definition

* **Type:** Operator
* **Namespace:** [Unity.GraphToolkit.Editor.GraphVisualization](/engine/6000.7/script-reference/unity/graphtoolkit/editor/graphvisualization.md)
* **Assembly:** UnityEditor

```csharp
public static bool operator ==(PortReference left, PortReference right)
```

### Parameters

**** (\[PortReference]\(/engine/6000.7/script-reference/unity/graphtoolkit/editor/graphvisualization/portreference)): The first [PortReference](/engine/6000.7/script-reference/unity/graphtoolkit/editor/graphvisualization/portreference.md) to compare.**** (\[PortReference]\(/engine/6000.7/script-reference/unity/graphtoolkit/editor/graphvisualization/portreference)): The second [PortReference](/engine/6000.7/script-reference/unity/graphtoolkit/editor/graphvisualization/portreference.md) to compare.

### Returns

| Type                                                          | Description                                                             |
| ------------------------------------------------------------- | ----------------------------------------------------------------------- |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | Returns true when `left` is equal to `right`. Otherwise, returns false. |