Erlang is a general-purpose, garbage-collected programming language and runtime environment, with built-in support for concurrency, distribution and fault tolerance.
Erlang is a general-purpose functional programming language and runtime environment. It has built-in support for concurrency, distribution and fault tolerance. Erlang is used in several large telecommunication systems from Ericsson. Erlang is open source and available for download on GitHub.
I need to distribute some sort of static configuration through my application. What is the best practice to do that?
I see three options:
Call application:get_env directly whenever a module requires to get configuration value.
Plus: simpler than…
I just asked a question about how the Erlang compiler implements pattern matching, and I got some great responses, one of which is the compiled bytecode (obtained with a parameter passed to the c() directive):
{function, match, 1, 2}.
{label,1}.
…
It is known that all functional languages share some basic properties like using functions as basic building block for programs with all the consequences like using recursion instead of iteration. However, some fundamental differences also exist.…
In every project I've started in languages without type systems, I eventually begin to invent a runtime type system. Maybe the term "type system" is too strong; at the very least, I create a set of type/value-range validators when I'm working with…
I understand that the acronym for Erlang's virtual machine, BEAM, stands for "Bogdan/Björn's Erlang Abstract Machine".
But I can't find definitive reference anywhere to exactly who Bogdan and Björn are.
Searching the erlang.org mailing list I do see…
I’ve begun studying Erlang and find the BEAM runtime environment fascinating. It’s commonly stated that in Erlang, processes belong to the language rather than the OS (meaning the runtime, meaning BEAM in this case). These are the lightweight,…
I have started some hands on in Erlang and I am getting : ** 1: syntax error before: '->' ** whenever i am declaring any function for eg. to calculate sum of a list (this is experimental, of cource there is Built In Function for find sum of a…
I can see 2 big companies like Klarna and Whatsapp are using Mnesia as their in memory database (not sure how they persist data with Mnesia with 2GB limit). My question is: why companies like those, and may be more I don't know, use Mnesia instead…
How can I uninstall Erlang/OTP which I use make install to build from source earlier. The install is pretty simple by using ./configure;make;make install;
The reason to uninstall is that I want to upgrade from Erlang R15B01 to Erlang R15B03.
Now I…
I've got to the stage where I've written quite a bit of Erlang code now, and I can see some style (bad or good) creeping into the way I've been writing it. This particular idiom I'd like some opinion on - is it better (more readable/faster/whatever)…
How do you use gen_udp in Erlang to do multicasting? I know its in the code, there is just no documentation behind it. Sending out data is obvious and simple. I was wondering on how to add memberships. Not only adding memberships at start-up, but…
I am learning Erlang and am quite impressed how easy it is to parallelize work. To practice a bit I dug up the good old Fibanocci sequence. In the following code I try to take advantage of parallelization by computing the expensive products three at…
One of the things that attracted me to Erlang in the first place is the Actor model; the idea that different processes run concurrently and interact via asynchronous messaging.
I'm just starting to get my teeth into OTP and in particular looking at…
