# GH_AbstractGraph.GH_Evaluator delegate

Namespace: [Grasshopper.Kernel.Graphs](https://developer.rhino3d.com/api/gh1/namespace/grasshopper.kernel.graphs.md) · Assembly: [Grasshopper](https://developer.rhino3d.com/api/gh1/assembly/grasshopper.md)

```cs
protected delegate GH_AbstractGraph.GH_Evaluator
```

**Signature:**

```cs
double GH_AbstractGraph.GH_Evaluator(double t)
```

**Parameters:**

- `t` ([double](https://learn.microsoft.com/dotnet/api/system.double))