Tuples.cs

//You can have multiple return values using tuples new syntax.
(string hello, string world) GetHelloWorldMessage()
{
  // And create tuple with having your values in paranthesis.
  return ("Hello", "World");
}

//You can deconstruct the resulting tuples values and assing them to different variables like this.
var (h, w) = GetHelloWorldMessage();
Console.Write($"{h} {w}");

//You can also assing your variables with type declarations.
var (string h2, string w2) = GetHelloWorldMessage();
Console.Write($"{h} {w}"); // This has the same output.

//Of course you can assing resulting tuple to a single tuple variable and use it like this.
var t = GetHelloWorldMessage();
Console.Write($"{t.hello} {t.world}"); // This has the same output too.

// These tuples are actually using the new ValueTuple struct and this struct actually have the "ItemX" properties inside like the old tuple do.
// So you can use these properties too if you want.
Console.Write($"{t.Item1} {t.Item2}"); // Guess what, this has the same output.