Multiple variable input on a case statement

[RonLight]

What if the switch statement allowed multiple arguments?

Let's say you have multiple variables and need to consider all permeations.

     int a = 0; //{Range 0-1}
     int b = 0; //{Range 0-1}
     string State = "";

First example is the way I currently need to write it. (25 lines with lots of nesting)

            switch (a)
            {
                case 0:
                    switch (b)
                    {
                        case 0:
                            State = "0,0";
                            break;
                        case 1:
                            State = "0,1";
                            break;
                    }
                    break;
                case 1:
                    switch (a)
                    {
                        case 0:
                            State = "1,0";
                            break;
                        case 1:
                            State = "1,1";
                            break;
                    }
                    break;
            }

A multi parameter format might look something like this: (15 lines and less nesting)

            switch (a, b)
            {
                case 0, 0:
                    State = "0,0";
                    break;
                case 0, 1:
                    State = "0,1";
                    break;
                case 1, 0:
                    State = "1,0";
                    break;
                case 1, 1:
                    State = "1,1";
                    break;
            }

[FaustVX]

This already works, just put parenthesis around the cese values

switch (a, b)
{
    case (0, 0):
        State = "0,0";
        break;
    case (0, 1):
        State = "0,1";
        break;
    case (1, 0):
        State = "1,0";
        break;
    case (1, 1):
        State = "1,1";
        break;
}

sharplab.io

[HaloFour]

This uses tuple syntax to wrap the values, but when building for release the use of tuples is elided.

[DavidArno]

It's worth pointing out that the switch expression is a viable alternative here:

var state = (a, b) switch {
    (0, 0) => "0,0",
    (0, 1) => "0,1", 
    (1, 0) => "1,0",
    (1, 1) => "1,1",
    _ => ""
};