colinbankier

defmodule Elchemy.LocalDeps do
  def find!(dir), do: find!([], dir)
  def find!(dirs, dir) do
    files = dir |> File.ls!
    if Enum.member?(files, "mix.exs") do
      [dir | dirs]
    else
      files
      |> Enum.map(&Path.join(dir, &1))
      |> Enum.filter(&File.dir?/1)

colinbankier

%% Based on code from
%%   Erlang Programming
%%   Francecso Cesarini and Simon Thompson
%%   O'Reilly, 2008
%%   http://oreilly.com/catalog/9780596518189/
%%   http://www.erlangprogramming.org/
%%   (c) Francesco Cesarini and Simon Thompson

-module(frequency).
-export([start/0,allocate/0,deallocate/1,stop/0, client/1, supervisor_start/0]).

colinbankier

%% Based on code from
%%   Erlang Programming
%%   Francecso Cesarini and Simon Thompson
%%   O'Reilly, 2008
%%   http://oreilly.com/catalog/9780596518189/
%%   http://www.erlangprogramming.org/
%%   (c) Francesco Cesarini and Simon Thompson

-module(frequency).
-export([start/0, init/0, allocate/0, deallocate/1]).

colinbankier

-module(index).
-export([get_index/1]).

% Used to read a file into a list of lines.
% Example files available in:
%   gettysburg-address.txt (short)
%   dickens-christmas.txt  (long)


% Get the contents of a text file into a list of lines.

colinbankier

Elixir in Action Part 1

Elixir News

• Announcing GenStage http://elixir-lang.org/blog/2016/07/14/announcing-genstage/

Recap - Concurrency

https://gist.github.com/colinbankier/a3f2eb7642b94c0d610a

Elixir in Action

Elixir in Action, by Sasa Juric

colinbankier

Brisbane Elixir

Elixir News

• Elxirconf EU https://www.youtube.com/watch?v=A60nxws_iVs&list=PLWbHc_FXPo2gB7HUE-2H61HAEyszAph3H
• Embedded Systems and Firmware are getting a lot of love in elixir http://nerves-project.org/news/2016/05/29/a-whirlwind-of-recent-changes/?utm_campaign=elixir_radar_53&utm_medium=email&utm_source=RD+Station
• Faking HTTP APIs during testing https://pspdfkit.com/blog/2016/testing-http-apis-in-elixir/?utm_campaign=elixir_radar_53&utm_medium=email&utm_source=RD+Station
• Wishing for Type Safety? Nice tute on using Dializer: https://medium.com/@barruumrex/seeking-simple-satisfaction-2a098902ddff#.aleu8m123
• Keep up to date http://plataformatec.com.br/elixir-radar

colinbankier

Put a plug in it!

Elixir News

Latest release v1.2.2. 1.2.x brought us: Erlang 18 support

• Faster compile times
• Maps now support millions of keys efficiently - Dict/HashDict/Set/HashSet deprecated.

colinbankier

Concurrency: the reason we're here

A bit of background

In Elixir, all code runs inside processes. Processes are isolated from each other, run concurrent to one another and communicate via message passing. Processes are not only the basis for concurrency in Elixir, but they also provide the means for building distributed and fault-tolerant programs.

Elixir’s processes should not be confused with operating system processes. Processes in Elixir are extremely lightweight in terms of memory and CPU (unlike threads in many other programming languages). Because of this, it is not uncommon to have tens or even hundreds of thousands of processes running simultaneously.

Processes

The most basic mechanism for creating processes is using the spawn/1 function:

colinbankier

Brisbane Elixir

July 23, 2015

General

Welcome newcomers!

Introducing Card Shark

Last meetup Mark walked us through creating a RESTful database application in Phoenix, from scratch. We played with the HTML and JSON generators that ship with Phoenix to create a simple CRUD app. We want to keep building

colinbankier

• Deployment Pipeline (re-instate)
  • CI (shippable or semaphore) triggers pipeline on successful master build
    • Probably 'Go' - has misgivings but does the job for now
  • builds and pushes docker container artifact
  • deploy to staging
    • smoke test
    • acceptance test
  • Deploy to prod (auto-deploy can be optional e.g. supporter)
    • smoke test
• Rollback on failure