using System;

​

static object GetSomething(bool b) => b ? 1 : "two";

​

static string Print(object input) => input switch {

    int val => $"is int: {val}",

    String val => $"is string {val}",

    _ => throw new InvalidOperationException($"Invalid type {input.GetType().Name}"),

};

​

Console.WriteLine(Print(GetSomething(true)));

Console.WriteLine(Print(GetSomething(false)));

Console.WriteLine(Print(false)); //throws

​

// Or maybe more meaningful than object

public abstract record SumType {

    public record IsInt(int val) : SumType {};

    public record IsString(string val) : SumType {};

}

​