One of the most awaited features of .NET Core 3.0 is the latest version of C#. In addition to some internal improvements to the compiler, C# ver 8.0 brings a few interesting new features to the language like f.e. the Switch Expressions and also Tuple Patterns.

Tuple Patterns allow matching of more than one value in a single pattern matching expression:

switch (state, transition)
{
    case (State.Running, Transition.Suspend):
        state = State.Suspended;
        break;
    case (State.Suspended, Transition.Resume):
        state = State.Running;
        break;
    case (State.Suspended, Transition.Terminate):
        state = State.NotRunning;
        break;
    case (State.NotRunning, Transition.Activate):
        state = State.Running;
        break;
    default:
        throw new InvalidOperationException();
}