Comment by keganunderwood | Hacker News Reader

Comment by keganunderwood | Hacker News Reader

Parent Full thread

Not a comment about tio but I didn't realize it isn't possible to write a simple hello world in C# dot net core.

What a shitty situation.

What can we do to make it better? Provide a default csproj file on load? Any better ideas?

Microsoft (R) Build Engine version 15.3.117.23532 Copyright (C) Microsoft Corporation. All rights reserved.

code.cs(1,22): error CS1022: Type or namespace definition, or end-of-file expected [/home/runner/project/project.csproj] code.cs(1,22): error CS1026: ) expected [/home/runner/project/project.csproj]

Build FAILED.

code.cs(1,22): error CS1022: Type or namespace definition, or end-of-file expected [/home/runner/project/project.csproj] code.cs(1,22): error CS1026: ) expected [/home/runner/project/project.csproj] 0 Warning(s) 2 Error(s)

Time Elapsed 00:00:04.92 No executable found matching command "dotnet-project/bin/Debug/netcoreapp*/project.dll"

Real time: 6.033 s User time: 2.973 s Sys. time: 0.442 s CPU share: 56.61 % Exit code: 1

> Not a comment about tio but I didn't realize it isn't possible to write a simple hello world in C# dot net core.

Not sure why you'd think it's impossible [1]. I even ran it in the TIO C# console and it works.

[1] https://rosettacode.org/wiki/Hello_world/Text#C.23

Just filling in some default fields in the tio editor would do. For example pre-fill the header as:

   using System;
   using System.IO;

and pre-filling Code with

   namespace example
   {
      public class Example
      {
         static void Main(){
         }
      }
   }

(But better names, my naming sucks!)

That would go a long way, then you could just add "Console.WriteLine("Hello World"); for hello world.

You don't even need the namespace or the usings if you just want to print hello world either.

What does the minimal program actually look like?

This looks like the minimal:

  class HelloWorld
  {
    static void Main()
    {
       System.Console.Write("Hello world!");
    }
  }

Try it online: https://tio.run/##Sy7WTc4vSv3/PzknsbhYwSM1Jyc/PL8oJ4WrmktBob...

No issues here: https://tio.run/##Sy7WTc4vSv3/PzknsbhYwbGgoLq4JLEkM1mhLD8zRc...

This works for me in TIO:

public class App { public static void Main(string[] args) { System.Console.WriteLine("Hello World"); } }

Reply on news.ycombinator.com