Welcome To Erlang By Example posted by Carl Lerche @ Wed, 20 Aug 2008 04:47:59 -0000

Carl Lerche — Wed, 20 Aug 2008 04:47:59 -0000

I would also be very interested in screencasts covering network / application protocol servers or proxies.

Welcome To Erlang By Example posted by Jack9 @ Sat, 16 Aug 2008 06:51:41 -0000

Jack9 — Sat, 16 Aug 2008 06:51:41 -0000

Hi Kevin,

I thought it was standard to use a non-recursive init() instead of a flagged if/fail to do startups. I’m new, so I might be wrong.

I’m very interested in the basics of gen_server and the precepts of when it is appropriate to use it and when not to use it.

I’ve very much enjoyed every minute of every screencast. I appreciate learning about such libraries as mnesia, qcl, eunit, etc in a minimal-use context (which gives me the basics and allows me to understand the documentation for the first time). I would say the meta-information of “whys” and “by-the-ways” are the single most valuable aspect of language walkthroughs. I look forward to any and all future screencasts in the use of Erlang, even if it’s the same topics in a different use-case.

Welcome To Erlang By Example posted by Charles McKnight @ Mon, 30 Jun 2008 22:38:15 -0000

Charles McKnight — Mon, 30 Jun 2008 22:38:15 -0000

Hi Kevin,

I’ve enjoyed your screencasts and have found them to be very helpful in understanding a number of items with regards to Erlang. What I’d find useful for future screencasts would be:

1) Unit tests
2) When to use / not use gen_server
3) How to handle large datasets with Mnesia
4) How to create network / application protocol servers or proxies

Regards,

Charles McKnight

Welcome To Erlang By Example posted by Arne Ehrlich @ Tue, 24 Jun 2008 17:25:11 -0000

Arne Ehrlich — Tue, 24 Jun 2008 17:25:11 -0000

Hi Kevin, I really liked the first four episodes. It got me some feeling for Erlang I could not get from reading tutorials. I would like to see OTP basics or an OTP overview.

Arne

Welcome To Erlang By Example posted by Graham Ashton @ Wed, 18 Jun 2008 23:23:02 -0000

Graham Ashton — Wed, 18 Jun 2008 23:23:02 -0000

Hi Kevin. Really enjoyed the first episode, so much so that I wrote up a quick review. Looking forward to the rest of them…

Graham

Welcome To Erlang By Example posted by Peter Kieltyka @ Sun, 15 Jun 2008 16:01:53 -0000

Peter Kieltyka — Sun, 15 Jun 2008 16:01:53 -0000

Kevin,

Awesome series. I’m looking forward to seeing how the Erlang chat system can be used with Ruby clients. Can’t wait!

Peter

Welcome To Erlang By Example posted by Pragmatic Studio @ Mon, 09 Jun 2008 15:44:30 -0000

Pragmatic Studio — Mon, 09 Jun 2008 15:44:30 -0000

@Dave: Thanks for the suggestion. We’ve tried H.264, but it tends to make the text look crunchy and washes out the colors. And since there’s a fair amount of coding in these screencasts, we ended up going with the Animation codec which makes the text clearer and more vibrant. It’s also pretty good at only recording the regions of the screen that have changed, making for relatively small file sizes.

I wish there was some kind of in-between “screencasting” codec, something like H.264 in the regions with lots of movement, but Animation crispness in the areas with little movement. If you have suggestions for tuning H.264, I’d love to learn how to use it better.

Thanks again!

Mike

Welcome To Erlang By Example posted by Philip Ratzsch @ Sat, 31 May 2008 20:25:45 -0000

Philip Ratzsch — Sat, 31 May 2008 20:25:45 -0000

@Kevin: Very nice series – I look forward to seeing more of it.

@Michael: While I’m no Kevin Smith, I’ve put together what I think is a fairly easy to understand tutorial on simple OTP/gen_server usage. Here’s the link

Welcome To Erlang By Example posted by Kevin Smith @ Sat, 31 May 2008 15:24:38 -0000

Kevin Smith — Sat, 31 May 2008 15:24:38 -0000

@Arie – Thanks for catching that! It looks like my refactoring went awry and I missed inserting that call. Of course, this suggests an episode on unit testing would be a Very Good Thing since proper unit tests would’ve caught this right away.

Welcome To Erlang By Example posted by Arie van Wingerden @ Sat, 31 May 2008 15:22:45 -0000

Arie van Wingerden — Sat, 31 May 2008 15:22:45 -0000

Ah, you detected and corrected this error in video 1 quite a bit later in the second video ;-) That’s how far I just got …

Welcome To Erlang By Example posted by Arie van Wingerden @ Sat, 31 May 2008 14:17:44 -0000

Arie van Wingerden — Sat, 31 May 2008 14:17:44 -0000

In route_messages receive block there is no recursion call after {recv_chat_msg,...

Welcome To Erlang By Example posted by Kevin Smith @ Sat, 31 May 2008 02:50:36 -0000

Kevin Smith — Sat, 31 May 2008 02:50:36 -0000

@Carl – I use Aquamacs Emacs as my editor of choice for all my Erlang coding needs. I’ve got a screencast up on my blog (http://weblog.hypotheticalabs.com) which illustrates how to setup an Emacs-based Erlang environment. The files to go along with the screencast are available for download, too.

@Shahbaz – I think so. The screencasts are targeted towards developers who have programming experience with other languages but who are new to Erlang. I don’t get into the details of the language, though. For that I’d recommend Joe Armstrong’s excellent “Programming Erlang”.

Welcome To Erlang By Example posted by Dave Smith @ Sat, 31 May 2008 02:20:37 -0000

Dave Smith — Sat, 31 May 2008 02:20:37 -0000

Great to see you guys doing this. I would note that it’s possible to get significantly better compression on screencasts if you use H.264 with low framerate (although I see you already have the framerate nice and low). In general you can get ~1 MB/min w/ H.264 tuned properly.

Just a random observation. :)

Welcome To Erlang By Example posted by Shahbaz Chaudhary @ Fri, 30 May 2008 20:24:01 -0000

Shahbaz Chaudhary — Fri, 30 May 2008 20:24:01 -0000

Is this good for those of use who have never used Erlang before? I’ve been programming for years and would like to use Erlang for some financial applications.

Welcome To Erlang By Example posted by Carl Bourne @ Fri, 30 May 2008 15:41:06 -0000

Carl Bourne — Fri, 30 May 2008 15:41:06 -0000

What MACOSX Editor is is Kevin using in the training?

Welcome To Erlang By Example posted by Mike Clark @ Wed, 28 May 2008 22:52:36 -0000

Mike Clark — Wed, 28 May 2008 22:52:36 -0000

Mark:

Thanks for bringing this to our attention. We’ve fixed the file names so that they consistently end in .zip.

Welcome To Erlang By Example posted by Mark Turner @ Wed, 28 May 2008 20:50:26 -0000

Mark Turner — Wed, 28 May 2008 20:50:26 -0000

Yeah… They were Zip’s. Yet the download link was to a .mov. Everything is working now… Thanks!!!

Welcome To Erlang By Example posted by Dave Thomas @ Wed, 28 May 2008 19:33:42 -0000

Dave Thomas — Wed, 28 May 2008 19:33:42 -0000

Mark:

Perhaps up have to unzip them?

Regards

Dave Thomas

Welcome To Erlang By Example posted by Kevin Smith @ Wed, 28 May 2008 18:00:58 -0000

Kevin Smith — Wed, 28 May 2008 18:00:58 -0000

@Mark – It sounds like the download didn’t complete so you might have a corrupt .mov file. Is it possible the file is getting truncated?

@Michael – I’ve got plans to move into OTP in the next couple of episodes. One of my goals for the series is to have the various components of the chat system running as gen_servers. The next episode is going to cover the basic of mnesia, which is an advanced topic on its own, I think.

Welcome To Erlang By Example posted by Michael Melanson @ Wed, 28 May 2008 17:22:33 -0000

Michael Melanson — Wed, 28 May 2008 17:22:33 -0000

I’d like to see more advanced screencasts on topics like OTP, debugging/profiling Erlang code and so on.

Welcome To Erlang By Example posted by Mark Turner @ Wed, 28 May 2008 16:51:12 -0000

Mark Turner — Wed, 28 May 2008 16:51:12 -0000

When I try to open the .MOV files quicktime says “Error -2048: Couldn’t open the file **.mov because its not a file that QuickTime understands” Any ideas?

Welcome To Erlang By Example posted by Kevin Smith @ Wed, 28 May 2008 00:34:37 -0000

Kevin Smith — Wed, 28 May 2008 00:34:37 -0000

I’m Kevin Smith—the host of the Erlang by Example screencast series. I’d like to welcome you to the discussion forum for the series. Do you have questions about what you’ve seen in the screencasts? Or maybe a general Erlang programming question? Ask away and I’ll do my best to answer them.

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