Try Erlang, a hands-on tutorial

Some notes after doing a few steps of tutorial:<p>- a simple command history feature in the shell would be really nice<p>- I wish the notification that I don't follow tutorial didn't appear there each time I try to play with the shell - well, I like the tutorial but I want to play on my own for a few moments, and this message is quite a distraction<p>- also, proceeding to next step of the tutorial could be done in some other way - e.g. I see logical operators and I try some of them, and they all disappear when i type one; it would be much easier for a newbie to learn some erlang if they stayed a bit longer on the screen<p>- there should be a 'back' button in some visible place too - e.g. next to clear window and reset - I can't find it at the moment<p>EDIT#1: formatting<p>EDIT#2: well, it seems that history is there - it just didn't work for some reason in my browser when I started. At the moment I am stuck in lists and tuples - whatever I do in 'Building a list' section I got a message it is not I am meant to do - is the tutorial bugged (or is it my browser again)?

Don't get me wrong, I respect these try-X efforts. But they have glaring annoyances (usually popping up in the name of Security) that are just begging me to open a good old-fashioned command-line REPL (but that's if I'm at my own computer).<p>For instance, in Try Erlang, io:format is out of reach, not to mention spawn. Same goes for Try Clojure: there doesn't appear to be a way to create threads.<p>Don't you think, given the languages we're talking about here, that these projects are self-handicapping from the start? (the seriousness of those security measures notwithstanding)<p>I'm getting the feeling that these online REPLs were created just to show that it's possible to do, not to address any practical concern or to highlight a strength of these languages.<p>Again, I don't mean to disparage the efforts of the authors. Just my $0.02

Very nice so far. The online REPL tutorials are always a great opportunity to try something new quickly.<p>"Operations on integers (and floats) include addiction.." Just a rather amusing typo in one of the first sections.

It’s pretty annoying to have to type “.” after every expression. I’m sure there’s a reason for it in Erlang, but perhaps it would be better for the tutorial to automatically add it for you for the first few sections of the tutorial, until you learn what it really means, and come upon a situation where you finally don’t want it. At the very least, a clearer warning message than “syntax error” should be shown if you forget the dot, in one of those fading black rectangles.

I got a 503, anyone else does?

This video is also a great way to get up to speed on Erlang: <a href="http://www.youtube.com/watch?v=qyVvGjNjBOA" rel="nofollow">http://www.youtube.com/watch?v=qyVvGjNjBOA</a>

This is not exactly what was requested by the current tutorial step. Feel free to play with the shell, anyway.<p>Erlang R13B04 (erts-5.7.5) &#62; node(). "This functionality has been disabled for security reasons in tryerlang.org." &#62; q(). "This functionality has been disabled for security reasons in tryerlang.org." &#62; ls(). "This functionality has been disabled for security reasons in tryerlang.org." &#62;

first thing i did, lists:map(fun(X) -&#62; X * 2 end, lists:seq(1,100)), and it worked! very cool.<p>next thing i did: application:which_applications(), and that didn't work.

<i>Expressions using arithmetical operators<p>Operations on integers (and floats) include addiction</i>[sic]