Anomaly with Add() vs. Update() with array of tables

[jgriffitts]

The following short program demonstrates a problem with Update() that I have not been able to understand or resolve. The call to Add() works, but Update() does not.

using System;
using System.Collections.Generic;
using Nett;

namespace ConsoleApp_TOML
{
    class Program
    {
        public class test_tbl1
        {
            public string label { get; set; }
            public DateTimeOffset timestamp { get; set; }

            public test_tbl1(string l, DateTimeOffset t) { label = l; timestamp = t; }
            public test_tbl1() { }
        };

        static void Main(string[] args)
        {
            /* Investigate problem with array update */
            var tb = Nett.Toml.Create();
            var tList = new List<test_tbl1>();
            tList.Add(new test_tbl1("first", DateTimeOffset.Now));
            tb.Add("test", tList);
            tList.Add(new test_tbl1("second", DateTimeOffset.MinValue));
            tb.Update("test", tList);
        }
    }
}

I get the following run-time exception:

Unhandled Exception: System.InvalidCastException: Unable to cast object of type 'Nett.TomlTableArray' to type 'Nett.TomlTable'.
   at Nett.TomlTable.CreateFromClass[T](ITomlRoot root, T obj, TableTypes tableType)
   at Nett.TomlObjectFactory.Update(TomlTable table, String key, Object obj, TableTypes type)
   at ConsoleApp_TOML.Program.Main(String[] args) in C:\Users\jcg\source\repos\ConsoleApp_TOML\ConsoleApp_TOML\Program.cs:line 26
Press any key to continue . . .

The same thing happens when using a C# array instead of a list:

            var tb = Nett.Toml.Create();
            var tArray = new test_tbl1[] {
                new test_tbl1("first", DateTimeOffset.Now),
                new test_tbl1("second", DateTimeOffset.MinValue)
            };
            tb.Add("test", tArray);
            tArray[1].label = "modified";
            tb.Update("test", tArray);

I have worked around by replacing the Update() with a Remove() followed by Add(), and this works OK but has the annoying side-effect of re-ordering the keys in the table. #

[paiden]

This is because there is no overload of update for the TableArray case. Somehow I always miss them.

So the compiler falls back to the best matching overload that is the table overload with argument type object. As a IEnumerable cannot be converted to a TomlTable an exception is thrown.