Ricardo Oliveira rcoproc

Elixir installation guide

Version numbers should be the ones you want. Here I do it with the last ones available at the moment of writing.

The simplest way to install elixir is using your package manager. Sadly, at the time of writing only Fedora shows the intention to keep its packages up to date. There you can simply sudo dnf install erlang elixir and you are good to go.

Anyway, if you intend to work with several versions of erlang or elixir at the same time, or you are tied to a specific version, you will need to compile it yourself. Then asdf is your best friend.

Erlang/Elixir syntax reference

This reference is aimed at allowing you to comfortably read erlang documentation and consume terms printed in Erlang format. It does not aim at allowing you to write Erlang code.

This is a modified version of http://elixir-lang.org/crash-course.html

Data types

Erlang and Elixir have the same data types for the most part, but there are a number of differences.

Comparativo Elixir x Ruby (Elixir Ruby comparation)

https://elixir-examples.github.io/examples/elixir-and-ruby-comparison

Exemplos em Elixir (Elixir Examples)

https://elixir-examples.github.io/

Elixir tips

https://github.com/blackode/elixir-tips

Diferença entre map, collect, select

https://medium.com/collabcode/diferen%C3%A7a-entre-map-collect-select-e-each-no-ruby-4d8dc853711f

Dockerizing a ruby on rails application

https://semaphoreci.com/community/tutorials/dockerizing-a-ruby-on-rails-application

Don't Know Metaprogramming In Ruby?

http://rubylearning.com/blog/2010/11/23/dont-know-metaprogramming-in-ruby/

Single responsibility principle

"Em outras palavras, todas as classes complicadas devem ser divididas em classes menores, responsáveis por um comportamento específico, facilitando o entendimento e a manutenção da base de código." https://rubygarage.org/blog/solid-principles-of-ood

Probably the most well known principle, and one that should try to adhere to most of the time.

Let's say you have this code:

Dynamic Dispatch
Dynamic Method
Ghost Methods
Dynamic Proxies
Blank Slate
Kernel Method
Flattening the Scope (aka Nested Lexical Scopes)
Context Probe
Class Eval (not really a 'spell' more just a demonstration of its usage)
Class Macros

Various ways to remove local Git changes

how-do-i-discard-unstaged-changes-in-git

If you want to revert changes made to your working copy, do this

git checkout .

	#!/usr/bin/env elixir

	defmodule Committer do
	defstruct [:name, :email]

	def list(repo) do
	repo
	\|> from_repo
	\|> Stream.unfold(fn str ->
	case String.split(str, "\n", parts: 2, trim: true) do

	# Run using rspec.
	# e.g.: rspec file_name.rb

	require 'rubygems'
	require 'rspec'

	module Enumerable
	def mymap (&block)
	return nil if block.nil?