Mutable LINQ object wrapper

gistfile1.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Program {
    public class NodeThing<T> {
        public T Value;

        public NodeThing() { }

        public NodeThing(T value) {
            this.Value = value;
        }

        public static implicit operator NodeThing<T>(T x) {
            return new NodeThing<T>(x);
        }

        public static explicit operator T(NodeThing<T> x) {
            return x.Value;
        }
    }

    class Program {
        static void Main(string[] args) {
            var fun = ((Func<IList<NodeThing<int>>, IEnumerable<int>>)(x => x.Select((n, idx) => idx < x.Count - 1 ? x[idx + 1].Value = n.Value * 2 : n.Value)));
            Console.WriteLine(string.Join(", ", fun(new List<NodeThing<int>> { 1, 2, 3, 4, 5 })));
            Console.Read();
        }
    }
}