Getting errors while creating a custom terrain editor (Unity C#)

Question

I created two scripts called "CustomTerrain" and "CustomTerrainEditor". Here is the code for the latter:

using UnityEngine;
using UnityEditor;
using EditorGUITable;

[CustomEditor(typeOf(CustomTerrain))] // Links editor code in here with CustomTerrain.cs
[CanEditMultipleObjects]
public class CustomTerrainEditor : Editor
{
    void OnEnable() {}

    public override void OnInspectorGUI() {} // The GUI we will see in the inspector
}

Here are the 2 errors I get:

I don't understand what I am doing wrong. Thanks for the help!

Answer 1

First, change typeOf to typeof.

And next if CustomTerrain in another namespace, add this space to your script.