Here’s a tip from Gustavo:

Btw, as a useful hint if you’re just starting with Go, I recommend
using hsandbox for experimenting with it:

bzr branch lp:hsandbox

This is a single Python file which implements a very tight
experimentation loop for several languages (Python, Go, C, C++, Shell,
etc), so you get a divided screen and every time you save the file at
the top of the terminal it’s immediately compiled (if necessary) and
executed on the bottom one.

This replaces very nicely the lack of a good interactive interpreter
on some of these languages, which we’re used to in Python.

erl_ddll:load_driver(“.”, “expat_erl”).

in your initialization code. The ejabberd source distribution also includes the files xml_stream.erl and xml.erl which provide an API to the library. For instance you can use xml_stream:parse_element(Data) to get an xml term, that you can then use the methods in xml.erl to process. No XPath, but if nice native Erlang API instead.

I wanted to share an implementation I built with C# and the Reactive Extension for .NET. I’d say it’s pretty elegant. It prints only the very last message received by the last node.

var lastMessage =
Enumerable
.Range(0, 100)
.Select(_ => new Subject())
.Memoize(nodes =>
{
nodes.Buffer(2, 1).Where(o => o.Count == 2).ForEach(o => o[0].Subscribe(o[1]));
Observable.Range(0, 90000).Delay(TimeSpan.FromMilliseconds(100)).Subscribe(nodes.First());

return nodes;
}).Last().Last();

Console.WriteLine(lastMessage);

Here’s the benchmark for 100 nodes at various number of messages:

https://lh3.googleusercontent.com/-rUEQtrp5bGo/Thmy1NUlMOI/AAAAAAAAAHE/DZkQwki3VDY/ErlangRingWithRx.png

http://pastebin.com/nnKbjdjh

Don’t give up on Erlang. Once you’ve overcome the initial pain of the syntax and different mode of thinking you’ll realize how incredibly powerful it is.