dive into elixir
DESCRIPTION
Elixir introductionTRANSCRIPT
About me
Hi, I'm Alex
I do mainly C++ / Objective-C / game dev for aliving
I've been involved in Elixir development since2012 (occasionally)
About this talk
1. What is Elixir?2. Macros3. The future
What is Elixir?
Definition:"Elixir is a functional, meta-
programming aware language builton top of the Erlang VM."
What is Elixir?Opinions:
"Erlang with Ruby syntax?"
"Syntactic sugar for Erlang?"
"Erlang already has macros. Whyanother language?"
What Elixir is
Definition (redux):"Elixir is a functional, meta-
programming aware language builton top of the Erlang VM."
What Elixir is Nice, readable and writeable syntax
What Elixir isA friendly REPL
What Elixir isSmall and powerful stdlib
What Elixir isTransparent access to all Erlang VM facilities
And finally
Elixir is fun
Macros
Did you know?
Macros
Meta-programming in Erlang:parse transforms
myfun({command, X}, Args) -> io:format("Command: ~p, Args: ~p", [X, Args]).
{function,4,myfun,2, [{clause,4, [{tuple,4,[{atom,4,command},{var,4,'X'}]},{var,4,'Args'}], [], [{call,5, {remote,5,{atom,5,io},{atom,5,format}}, [{string,5,"Command: ~p, Args: ~p"}, {cons,5,{var,5,'X'}, {cons,5,{var,5,'Args'},{nil,5}}}]}]}]}
See for examplesYurii Rashkovskyi's talk
MacrosMeta-programming in Erlang:
use at your own risk
Macros
Meta-programming in Elixir
is better studied in its natural habitat
Macros
In summary: quite a useful tool
Things I left outdetails about protocolsrecordsmix – project manager and build toolerror handling (stick to Erlang style)typespecs and Dyalizerdocumentation on quote
Useful links
(screencasts) (newsletter)
elixir-lang.orgreference docsthe wikielixirsips.comelixir-fountain.com
The future
Elixir is gradually approaching 1.0
The community and the ecosystem are growing atan increasing rate
Introductory learning material is plenty (tutorials,blogs, two books in early access)
The future
Advanced documentation is still lacking
Use in production is modest
I personally hope to see and develop into something real
ElixirWerkz BEAMcommunity
The futureThe vision:
more convenient
more productive
more fun experience
when building applications for the Erlang VM
Erlang VM
At run time, it's Erlang all the way down
Erlang VM
Elixir <X> are Erlang <X>
:erlang.binary_to_list("abc") # Erlang list|> String.from_char_list! # UTF-8 binary|> :erlang.is_binary # true
Erlang VMTherefore, Elixir lets you build
concurrent
fault-tolerant
scalable
highly available
applications
Thank you
Questions?
@true_droid
github.com/alco