C# vNext in VS 14 CTP 4

Program.cs

using System;
using System.Math;
using System.Collections.Generic;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            var dic = new Dictionary<string, int>
            {
                ["one"] = 1,
                ["two"] = 2,
            };

            Console.WriteLine(dic["one"]);
            Console.WriteLine(dic["two"]);

            RunAsync().Wait();
        }

        public static async Task RunAsync()
        {
            try
            {
                await Task.Delay(30);
                throw new InvalidOperationException(
                    "dummy error in " + nameof(RunAsync));
            }
            catch (Exception ex) if (ex.Message.Contains("dummy"))
            {
                await Task.Delay(30);
                Console.WriteLine(ex.Message);
            }
            finally
            {
                await Task.Delay(30);
            }
        }
    }
}

struct Point
{
    public int X { get; } = 30;
    public int Y { get; } = 50;
    public double Norm => Sqrt(X * X + Y * Y);
    public override string ToString() => "(" + X + ", " + Y + ")";
}