christiannagel

// C# 6
public void SomeFunStuff()
{
  Func<int, int, int> add = (x, y) => x + y;

  int result = add(38, 4);
  Console.WriteLine(result);
}

// C# 7

christiannagel

// C# 6
var t1 = Tuple.Create(42, "astring");
int i1 = t1.Item1;
string s1 = t1.Item2;

// C# 7
var t1 = (n: 42, s: "magic");
int i1 = t1.n;
string s1 = t1.s;

christiannagel

// C# 7.0
var t1 = (FirstName: racer.FirstName, Wins: racer.Wins);
int wins = t1.Wins;

// C# 7.1
var t1 = (racer.FirstName, racer.Wins);
int wins = t1.Wins;

christiannagel

(int n, string s) = (42, "magic");

var p1 = new Person("Tom", "Turbo");
(string firstName, string lastName) = p1;

christiannagel

public void PatternMatchingWithIsOperator(object o)
{
  if (o is 42)
  {
  }
  if (o is Person p)
  {
  }
  if (o is var v1)
  {

christiannagel

// C# 6
private readonly IBooksService _booksService;
public BookController(BooksService booksService)
{
  if (booksService == null)
  {  
    throw new ArgumentNullException(nameof(b));
  }

  _booksService = booksService;

christiannagel

// C# 7.0
static void Main()
{
  SomeMethodAsync().Wait();
}

// C# 7.1
async static Task Main()
{
  await SomeMethodAsync();

christiannagel

// ref returns and ref locals with C# 7.0
int[] _numbers = { 3, 7, 11, 15, 21 };
public ref int GetNumber(int index)
{
  return ref _numbers[index];
}

// ref readonly with C# 7.2
int[] _numbers = { 3, 7, 11, 15, 21 };
public ref readonly int GetNumber(int index)

christiannagel

@{
    ViewData["Title"] = "Privacy Policy";
}
<h2>@ViewData["Title"]</h2>

<p>Use this page to detail your site's privacy policy.</p>

christiannagel

public void ConfigureServices(IServiceCollection services)
{
    services.Configure<CookiePolicyOptions>(options =>
    {
        // This lambda determines whether user consent for non-essential cookies is needed for a given request.
        options.CheckConsentNeeded = context => true;
        options.MinimumSameSitePolicy = SameSiteMode.None;
    });

    services.AddDbContext<ApplicationDbContext>(options =>