Miguel de Icaza's blog - Latest Comments in Interactive C# Shell - Miguel de Icaza

Re: Interactive C# Shell - Miguel de Icaza

Anonymous — Sun, 19 Apr 2009 23:26:59 -0000

Python and Ruby are dynamic languages. Most dynamic languages have interpreters.
C# is not a dynamic language, and don't have a REPL.

And .NET have IronPython, IronRuby and PowerShell, all have REPL's.

So you can't say that .NET sucks.

And yes, Microsoft sucks.
But Mono isn't Microsoft.

Troll.

Re: Interactive C# Shell - Miguel de Icaza

blah lar — Sat, 24 Jan 2009 14:47:41 -0000

Don't do that... it's not C#

Re: Interactive C# Shell - Miguel de Icaza

psantosl — Tue, 16 Sep 2008 05:26:53 -0000

keep yourself anonymous...

Re: Interactive C# Shell - Miguel de Icaza

psantosl — Tue, 16 Sep 2008 05:26:13 -0000

I was going to propose something like that! Didn't know about pash

Re: Interactive C# Shell - Miguel de Icaza

psantosl — Tue, 16 Sep 2008 05:22:48 -0000

I'd love to have #!/usr/bin/csharp scripts!!

Ok, maybe something like /usr/bin/monoscript (or better name) so that it supports F# and the rest of the family too!

Re: Interactive C# Shell - Miguel de Icaza

Anonymous Coward — Mon, 15 Sep 2008 17:35:32 -0000

Python, Ruby interpreters and others had this for years, you are just catching up now. .NET sucks.

Re: Interactive C# Shell - Miguel de Icaza

migueldeicaza — Thu, 11 Sep 2008 00:54:54 -0000

We are on schedule, give or take a week or two.

Re: Interactive C# Shell - Miguel de Icaza

migueldeicaza — Thu, 11 Sep 2008 00:54:05 -0000

I would love to see this happen!

I refactored the C# shell into an Evaluator class, and it should now be easier to integrate in other applications, hopefully with the DLR as well.

At this point, the real question is: which features do we need in the CSharpEvaluator class to make it useful for the above scenario?

Re: Interactive C# Shell - Miguel de Icaza

halr9000 — Wed, 10 Sep 2008 11:46:45 -0000

That's pretty darn neat. I can see a lot of similarities to what you are doing with what a guy is doing with Pash, which is a mono-based version of PowerShell: http://pash.sourceforge.net/. You guys should join forces or something. :)

Re: Interactive C# Shell - Miguel de Icaza

Aleks — Wed, 10 Sep 2008 09:03:18 -0000

How accurate is the roadmap from:
http://www.mono-project.com...
? Is there a chance that Mono 2.2. will be released in November?

Re: Interactive C# Shell - Miguel de Icaza

Doug — Wed, 10 Sep 2008 08:02:18 -0000

Lovely! What I'd love to do is connect this to the Dynamic Language Runtime (DLR) and make it so that it could share data with IronPython, IronRuby, and the rest. This would be a great step in the classroom. Let me know if I can help.

-Doug

Re: Interactive C# Shell - Miguel de Icaza

Justin Alan Ryan — Tue, 09 Sep 2008 15:14:23 -0000

In Python, we have a __repr__ method to go along with __str__ - our rough equivalent of ToString, which are typically invoked by str(obj) or repr(obj). Also just printing a value typically gets repr.

An Inspect() method is not a bad idear at all. You might look at some of the enhancements people have created for Python, which behaves like this by default, in the iPython shell.

Re: Interactive C# Shell - Miguel de Icaza

nachokb — Tue, 09 Sep 2008 13:31:26 -0000

Even though I don't do much C#, having used Ruby's irb, THIS ROCKS. I hope Java guys are watching this (as I have a few projects in Java).

I'm intrigued about Joe's comment about Twisted's "manhole", as I never tried it...

Keep the good work,

-- nachokb

Re: Interactive C# Shell - Miguel de Icaza

Anthony — Tue, 09 Sep 2008 11:58:28 -0000

This msdn link will also help

http://msdn.microsoft.com/e...

Re: Interactive C# Shell - Miguel de Icaza

Anthony — Tue, 09 Sep 2008 11:22:52 -0000

Miguel

This blog starts to sheds some light on PowerShell's Adaptive Type System (ATS) and its use of adapters to .NET types

http://blogs.msdn.com/power...

this one shows more of the underlying type adaptor relationships

http://blogs.msdn.com/power...

And the free sample chapter 1 "Object and Object Types" from the Apress book "Pro Windows PowerShell" should finish off your questions

http://www.apress.com/book/...

Re: Interactive C# Shell - Miguel de Icaza

migueldeicaza — Tue, 09 Sep 2008 09:20:38 -0000

Microsoft's C# compiler is proprietary, so we can not do the work of turning it into a shell; Microsoft would have to do that.

Our compiler is dual-licensed MIT X11 or GPL (pick your choice).

But additionally, our compiler being written in C# significantly simplified the process of adding a REPL mode to it.

Making it run under the .NET framework is the subject of a separate post.

As for powershell: could you provide more information? I am not familiar with it, and I am curious as to what you have in mind.

Re: Interactive C# Shell - Miguel de Icaza

migueldeicaza — Tue, 09 Sep 2008 09:18:08 -0000

Do you have more details? What is the way this is done there?

Re: Interactive C# Shell - Miguel de Icaza

migueldeicaza — Tue, 09 Sep 2008 09:17:43 -0000

It would be possible, its a good idea.

Currently it executes as scripts all the files in ~/.config/csharp, but we should make it also run any scripts specified on the command line.

Re: Interactive C# Shell - Miguel de Icaza

Anonymous Coward — Tue, 09 Sep 2008 09:09:16 -0000

Would this be suitable for writing 'shell scripts' in C#? #!/usr/bin/csharp style?

Remaining anonymous as I'm ashamed I don't know enough mono to know if this is already possible. :P

Re: Interactive C# Shell - Miguel de Icaza

Uriel Katz — Tue, 09 Sep 2008 07:41:34 -0000

nicely done!
i was missing a shell like in python,what you can add is things like auto-completion,and enumerating the properties of a object like in IPython

Re: Interactive C# Shell - Miguel de Icaza

Carlos Alberto — Tue, 09 Sep 2008 07:25:02 -0000

Auto completion (bash alike) would be nice, too.

Re: Interactive C# Shell - Miguel de Icaza

Anthony — Tue, 09 Sep 2008 03:44:17 -0000

Would be awesome if it would also be possible to use with Microsoft's csc compiler? Maybe using powershell's interactive type system. What do you think?

Re: Interactive C# Shell - Miguel de Icaza

migueldeicaza — Tue, 09 Sep 2008 00:43:01 -0000

This feature is already there, its the ShowVars method that you can invoke from the shell.

As for lifetime, standard .NET lifetime applies: if there is a reference to the object, it stays alive. Any variables that you do not manually point to null will keep references to any objects you created.

Re: Interactive C# Shell - Miguel de Icaza

Bruce — Tue, 09 Sep 2008 00:17:24 -0000

intellisense and tab completion

Re: Interactive C# Shell - Miguel de Icaza

Andrew — Tue, 09 Sep 2008 00:14:18 -0000

I've wanted this exact thing for over a year now. Awesome.

Perhaps a method to list objects one has created in the shell would be useful in addition to an Inspect method.

What is the effect of GC on objects allocated in the shell? Are they persistent for the session without fear of being reclaimed?