[OT] What are D's values?

Paulo Pinto pjmlp at progtools.org
Sat Oct 9 06:50:19 UTC 2021

On Saturday, 9 October 2021 at 00:59:42 UTC, Greg Strong wrote:
> On Saturday, 9 October 2021 at 00:30:21 UTC, Adam Ruppe wrote:
>> D is realistically best suited to be a more fun C#.
> Yes, absolutely!  I made the move from C++ to C# about 15 years 
> ago.  The C# ecosystem is really a pretty good place to be.  
> But its metaprogramming capabilities, while once competitive, 
> are now pretty unimpressive.  The programming language 
> state-of-the-art has come a long way in the last 20 years (even 
> if most people are still using old tech.)  The D language's 
> CFTE is really THE game changer.  I know of nothing else like 
> it, and I could make some really good use of that in my C# code 
> base...
> So I'm using D for some new projects.  Of course, it has some 
> other pretty innovative things too.  For example, the 
> scope(exit) construct.  That's soooo much better than needing 
> to enclose things in layer after layer of try-catch blocks.  
> Other languages should all be copying this construct.
> Anyway, yes, D is a very compelling option for experienced C# 
> developers who want to be more on the cutting edge.

I still find Roslyn compiler plugins and the code generators 
quite good.

You can simulate scope(exit) with an helper struct.

using System;

#nullable enable

// ensure this is a stack only struct
ref struct ScopeExit {
     public ScopeExit(Action cleaner)
         this.cleaner = cleaner;

     public void Dispose()
       catch {
          // maybe do something interesting here

     private Action cleaner;


public class Example {
     public static void Main() {
         using var netSocket = new ScopeExit(() => { /* clean 
somethig */});

Naturally D's scope(exist) is cleaner to write.

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