public delegate T ItemDrawer<T>(
	Rect position,
	T item
)

public delegate ItemDrawer.<T>(
	position : Rect,
	item : T
) : T

using Rotorz.ReorderableList;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

public class ExampleWindow : EditorWindow {
    public List<string> wishlist = new List<string>();

    private void OnGUI() {
        ReorderableListGUI.ListField(wishlist, DrawListItem);
    }

    private string DrawListItem(Rect position, string value) {
        // Text fields do not like `null` values!
        if (value == null)
            value = "";
        return EditorGUI.TextField(position, value);
    }
}

import Rotorz.ReorderableList;
import System.Collections.Generic;

class ExampleWindow extends EditorWindow {
    var wishlist:List.<String>;

    function OnGUI() {
        ReorderableListGUI.ListField(wishlist, DrawListItem);
    }

    function DrawListItem(position:Rect, value:String):String {
        // Text fields do not like `null` values!
        if (value == null)
            value = '';
        return EditorGUI.TextField(position, value);
    }
}