ob-csharp

Table of Contents

• Description
  • Code
• Prerequisites
• Installation
  • Doom Emacs (my preffered distribution)
• Features
  • Basic Hello World
  • Creating classes
  • Quick MVC
  • Output as a table

Description

This is a small org-babel plugin that utilises dotnet-script to execute c# block

The idea for this came about after reading Scott Hanselman’s blog post about dotnet-script. I have been using a tool called LinqPad as part of my workflow to test code out but in my effort to never leave Emacs I wanted a LinqPad ish experiance in Org. This way I can use the scripting extension of Dotnet to create little blocks of code to execute.

• @samwdp (Author)
• @bernhardrichter & @filip_woj (dotnet-script)

Code

;;; ob-cshrp.el --- org-babel functions for csharp evaluation

;;; Commentary:
;;
;; org-babel functions for rust evaluation
;;

;;; Code:
(require 'ob)
(require 'csharp-mode)

(add-to-list 'org-babel-tangle-lang-exts '("csharp" . "cs"))

(defvar org-babel-default-header-args:csharp '())

(defun ob-csharp--build-script-run-command (path)
  "Create run command according to the PATH."
  (format "dotnet script %s" path))

(defun org-babel-execute:csharp (body params)
  (let* ((processed-params (org-babel-process-params params))
         (src-temp (org-babel-temp-file "csharp-src-")))
    (with-temp-file src-temp (insert body))
    (let ((results (org-babel-eval (ob-csharp--build-script-run-command src-temp) "")))
      (org-babel-reassemble-table
       (org-babel-result-cond (cdr (assoc :result-params params))
         (org-babel-read results)
         (let ((tmp-file (org-babel-temp-file "c-")))
           (with-temp-file tmp-file (insert results))
           (org-babel-import-elisp-from-file tmp-file)))
       (org-babel-pick-name
        (cdr (assoc :colname-names params)) (cdr (assoc :colnames params)))
       (org-babel-pick-name
        (cdr (assoc :rowname-names params)) (cdr (assoc :rownames params)))))))

(provide 'ob-csharp)
;;; ob-csharp.el ends here

Prerequisites

• dotnet core/5 installed (or any future versions that utilise the dotnet command)
• Install dotnet-script

  dotnet tool install -g dotnet-script
      

• Make sure your .dotnet/tools directory is in your PATH variable (restart if needed)

Installation

Doom Emacs (my preffered distribution)

• packages.el

  (package! ob-csharp :recipe (:host github :repo "samwdp/ob-csharp"))
      

• config.el

  (org-babel-do-load-languages 'org-babel-load-languages '((csharp . t)))
      

Features

Basic Hello World

Console.WriteLine("Hello World");

Hello World

Creating classes

public class Calculator
{
   public static int Add(int a, int b) =>
       a + b;
}

Console.WriteLine(Calculator.Add(1, 2));

3

Quick MVC

public class ExampleController
{
    public void Render(ExampleModel obj)
    {
        Console.WriteLine(obj.ToString());
    }
}

public class ExampleModel
{

    public string Name {get; set;}

    public override string ToString()
    {
        return Name;
    }
}

var model = new ExampleModel()
{
    Name = "Hello World"
};

var controller = new ExampleController();

controller.Render(model);

Hello World

Output as a table

for (char  c = 'a'; c < 'd'; c++)
      System.Console.Write("{0} ",c);
    System.Console.WriteLine();
    for (int i = 0; i < 3; i++)
      System.Console.Write("{0} ",i);

a	b	c
0	1	2