Note: This was an overly elaborate April Fools project, and whilst fully functional is not intended for serious use, see also The real readme

Erlang.NET

Hosting .NET code in the Erlang VM? Sure can do, but what does this look like?! Getting Started

Well - here is an Erlang Gen Server written in VB.NET

Public Class MyGenServerVB
    Inherits IHandleInfo(Of Msg)
    Public Sub New()
    End Sub
    Public Function HandleInfo(ByVal ctx As HandleInfoContext, ByVal msg As Msg) As HandleInfoResult
      If msg.Item1 = "hello robert" Then
        Erlang.Send(msg.Item2, "hello joe")
      Else
        Erlang.Send(msg.Item2, "weeee")
      End If
      Return ctx.NoReply()
    End Function
End Class

Here is an application that uses this gen server, written in C#

  public class MyApp : IApp {
    public Object Start() {
      return GenServer.StartLink(() => new MyGenServerVB() );
    }
  }

And here is the usage of that in an Erlang supervision tree - written in Erlang

  init([]) ->
    {ok, { #{ strategy => one_for_one }, 
           #{ start => { dotnet_shim
                       , start_link
                       , [ "priv/MyApp.dll", "Acme.MyApp" ]
                       }
            , id => my_app
            , type => worker
            }
       ]}}.

And then in Erlang we can quite happily get the pid of this gen server and send/receive messages, resulting in code being executed across the two VMs in both languages.

  Pid ! { "hello robert", self() },
  receive 
    Msg -> io:format(user, "Got a message! ~p~n", [ Msg ]) %% "hello joe
  end,

  Pid ! { "anything else", self() },
  receive 
    Msg2 -> io:format(user, "Got another message! ~p~n", [ Msg2 ]) %% "weeeeee
  end

Want to know more? Check out the Wiki for a step by step guide on how to do more...