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@elixirlang / elixir-lang.orgWednesday, May 14, 14

Rails 2.2threadsafe

Wednesday, May 14, 14

Sapir-Whorfhypothesis

The structure of a language affects the ways in which its

respective speakers conceptualize their world

zuzuvapaburu

http://en.wikipedia.org/wiki/Himba_people

“Threadsafe”

Functionalprogramming

• Explicit instead of implicit state

• Explicit instead of implicit state• Transformation instead of mutation

• Functional

• Functional• Concurrent

• Functional• Concurrent• Distributed

Switch

Browser

Endpoint

Server

http://stackoverflow.com/questions/1636455/where-is-erlang-used-and-why

http://blog.whatsapp.com/index.php/2012/01/1-million-is-so-2011/

2 million connections on a single node

Intel Xeon CPU X5675 @ 3.07GHz24 CPU - 96GBUsing 40% of CPU and Memory

Idioms

Sequentialcode

elixir

Sequentialcode

elixir

WebDB MailerStats

• Processes• Supervisors• Applications• Message passing• “Fail fast”

• Isolated• Concurrent• Fault tolerant

• Isolated• Concurrent• Fault tolerant• Distributed?

elixir

app2@localapp1@local

elixir

• Compatibility

• Compatibility• Extensibility

• Compatibility• Extensibility • Productivity

goal #1

Compatibility

goal #2

Extensibility

Now we need to go meta. We should now think of a language design as being a

pattern for language designs. A tool for making more tools of the same kind.

Guy Steele - “Growing a language”at ACM OOPSLA 1998

defmacro unless(expr, opts) do quote do if(!unquote(expr), unquote(opts)) endend

unless(is_number(x), do: raise(“oops”))

elixir

defmodule MathTest do use ExUnit.Case

test "basic operations" do assert 1 + 1 == 2 endend

elixir

from p in Post,where: p.published_at < now and p.author == “José”,order: p.created_at

elixir

goal #3

Productivity

Focus on tooling.Demo time!

elixir-lang.orgWednesday, May 14, 14

GeeConValim2014

@elixirlang / elixir-lang.orgWednesday, May 14, 14

@elixirlang / elixir-langs3-eu-west-1.amazonaws.com/presentations2014/12_presentation.pdf · Now we...

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