Visual Studio 14 CTP2 C# notes

Class1.cs

using System;
// Using static
using System.Diagnostics.Debug;
using System.Math;
using System.Linq.Enumerable;
using System.Collections.Generic;
#if NETFX_CORE
using Windows.Web.Http;
#else
using System.Net.Http;
#endif

namespace HubApp1
{
    // Primary constructors
    class Class1(int x, int y, long l)
    {
        // Initializers for auto-properties
        // Parameters on classes and structs
        public int X { get; set; } = x;
        public int Y { get; } = y;

        // Field parameters
        private long _l = l;

        // Explicit constructors
        public Class1() : this(1, 2, 3L) { }

        public async void DoStuff()
        {
            WriteLine(Sqrt(3 * 3 + 4 * 4));

            // Declaration expressions
            if (int.TryParse("69", out int i))
            {
                WriteLine(i);
                // Extension methods
                IEnumerable<int> range = Range(5, 17);
            }

            HttpClient hc = new HttpClient();
            try
            {
                throw new ArgumentNullException("X");
            }
            // Exception filters
            catch (ArgumentNullException e) if (e.ParamName == "X")
            {
                WriteLine(e);
                // Await in catch and finally blocks
                string result = await hc.GetStringAsync(new Uri("http://bing.com"));
            }
            finally
            {
                string result2 = await hc.GetStringAsync(new Uri("http://microsoft.com"));
            }

            // Null propagation
            string ss = null;
            int? ssLength = ss?.Length;

            // not yet done

            // String interpolation
            //string full = $"First: {x} Second: {y}";

            // Binary literals and digit separators
            //var bits = 0b00101110;
            //var bits = 0b0010_1110;
            //var hex = 0x00_2E;
            //var dec = 1_234_567_890;

            // Constructor Inference
            //Tuple<int, string, bool> tuple = new Tuple(3, "three", true);
        }
    }

    // Base initializer
    class Class2() : Class1(4, 5, 6L) { }
}