Inline switch / case statement in C#

Question

I am on a weird kick of seeing how few lines I can make my code. Is there a way to condense this to inline case statements?

    switch (FIZZBUZZ)
    {
      case "Fizz":
        {
          //Do one process
          break;
        }
      case "Buzz":
        {
          //Do one process
          break;
        }
      case "FizzBuzz":
        {
          //Do one process
          break;
        }
    }

to look something like this:

    switch (FIZZBUZZ)
    {
      case "Fizz": //Do one process
      case "Buzz": //Do one process
      case "FizzBuzz": //Do one process
    }

Answer 1

Introduced in C# 8.

You can now do switch operations like this:

FIZZBUZZ switch
{
    "fizz"     => /*do something*/,
    "fuzz"     => /*do something*/,
    "FizzBuzz" => /*do something*/,
    _ => throw new Exception("Oh ooh")
};

Assignment can be done like this:

string FIZZBUZZ = "fizz";
string result = FIZZBUZZ switch
    {
        "fizz"     => "this is fizz",
        "fuzz"     => "this is fuzz",
        "FizzBuzz" => "this is FizzBuzz",
        _ => throw new Exception("Oh ooh")
    };
Console.WriteLine($"{ result }"); // this is fizz

Function calls:

public string Fizzer()     => "this is fizz";
public string Fuzzer()     => "this is fuzz";
public string FizzBuzzer() => "this is FizzBuzz";
...
string FIZZBUZZ = "fizz";

string result = FIZZBUZZ switch
    {
        "fizz"     => Fizzer(),
        "fuzz"     => Fuzzer(),
        "FizzBuzz" => FizzBuzzer(),
        _ => throw new Exception("Oh ooh")
    };
Console.WriteLine($"{ result }"); // this is fizz

Multiple inline-actions per case (delegates are a must I think):

string FIZZBUZZ = "fizz";
string result = String.Empty;

_= (FIZZBUZZ switch
{
    "fizz" => () =>
    {
        Console.WriteLine("fizz");
        result = "fizz";
    },
    "fuzz" => () =>
    {
        Console.WriteLine("fuzz");
        result = "fuzz";
    },
    _ => new Action(() => { })
});

You can read more about the new switch case here: What's new in C# 8.0

Answer 2

If you want to condense things you could just put things on one line (let's imagine that "do one process is a call to Console.WriteLine):

switch (FIZZBUZZ)
{
    case "Fizz": Console.WriteLine("Fizz"); break;
    case "Buzz": Console.WriteLine("Buzz"); break;
    case "FizzBuzz": Console.WriteLine("FizzBuzz"); break;
}

If you want to get fancy you could create a map of strings to actions like this:

var map = new Dictionary<String, Action>
{
    { "Fizz", () => Console.WriteLine("Fizz") },
    { "Buzz", () => Console.WriteLine("Fizz") },
    { "FizzBuzz", () => Console.WriteLine("FizzBuzz") }
};

And then you could invoke the method like this:

map[FIZZBUZZ].Invoke(); // or this: map[FIZZBUZZ]();