[erlang-questions] What I dislike about Erlang
Fri Aug 31 09:57:53 CEST 2012
On Fri, Aug 31, 2012 at 11:36 AM, Francesco Mazzoli <> wrote:
> Did you read his post? His main point about documentation is that people tend
> to document functions but not data structures, which is something that I fully
> agree with.
This post has nothing to do with erlang. It is just an ancient
question: waste your time on documenting inner code or not.
I never document such things, because it is silly: you spend more time
on rewriting documentation.
And I perfectly read ffmpeg sources without any documentation inside them.
So, about erlang.
There are two BIG problems in erlang: error_logger and lack of frames.
error_logger is a problem, because 99% times, when erlang VM crashes,
it was error_logger, that allocated 40 GB of RAM and died.
If erlang is eating 100% CPU, it is error_logger. Error_logger is the
heel of Achilles of erlang. And it is a pity, because it makes
to create gen_server with states larger than 100 KBytes.
Lack of frames makes almost impossible hot code upgrades with changing
of data structures. It makes impossible distributing plugins.
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