[erlang-questions] Erlang for youngsters
Mon Jun 16 15:52:40 CEST 2014
Imo the best tutorial for a beginner in any language (for someone who has
experience in other ones) is something intermediate and familiar using some
ready framework. Some thing which allows him/her to write in a hour
something he used to build in other language. Often it is possible to do
this even without knowing the language almost altogether. Like, tutorial on
Django is a great way to start learning python. Something like this could
be created for Erlang, either over pure Cowboy, or ChicagoBoss, or
whatever. Just a dumb step by step (type this, run that) tutorial which can
be done by anyone who has any programming background. In the end there will
be a working site with forms, POSTs and other fancy stuff. I for one
learned myself both python and erlang exactly this way (using Django and
CB), skipping all the boring stuff.
Doing hellowords, compiling modules, doing releases and other stuff like
that is really very boring. You can do it later.
Also I'd say talking about concurrency should start with OTP, and introduce
spawn() later. First, OTP gen_server is just easier than standard
spawn/receive for anyone with OO background. Second, spawn/receive is too
similar to standard approaches to multithreading in mainstream languages
and it is harder to see all the benefits of Erlang supervision and workers.
Erlang as a language looks very hard for two weeks, then it suddenly
becomes very easy (as a language, concurrency is always hard). Recursion is
hard in any language without pattern matching.
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