Hello World Program using Result/Pattern Matching in Typescript, F# and C#

hello.csx

interface IResult { }

class Accepted : IResult
{
    public string text { get; set; }
}

class Rejected : IResult { }

string GetResultText(IResult result)
{
    return result switch
    {
        Accepted r => r.text,
        _ => "Reject"
    };
}

void PrintResult(IResult result) =>
    System.Console.WriteLine($"Hello, {GetResultText(result)}!");

PrintResult(new Accepted {text = "World"});
PrintResult(new Rejected());

hello.fsx

type Result =
    | Accepted of {| text: string |}
    | Rejected

let GetResultText = function 
    | Accepted result -> result.text
    | Rejected -> "Reject"

let PrintResult = GetResultText >> printfn "Hello, %s!"

Accepted {| text = "World" |} |> PrintResult
Rejected |> PrintResult

Hello.ts

type Result = Accepted | Rejected

interface Accepted {
    status: "Accepted"
    text: string
}

interface Rejected {
    status: "Rejected"
}

function GetResultText(result: Result) : string {
    switch (result.status) {
        case "Accepted": return result.text
        case "Rejected": return "Reject"
    }
}

function PrintResult(result: Result) {
    console.log('Hello, ' + GetResultText(result) + '!')
}

PrintResult({ status: "Accepted", text: "World" })
PrintResult({ status: "Rejected" })