Mikhail Vaysman Vaysman

Prelude

I. Preface and Motivation

This guide was written because I don't particularly enjoy deploying Phoenix (or Elixir for that matter) applications. It's not easy. Primarily, I don't have a lot of money to spend on a nice, fancy VPS so compiling my Phoenix apps on my VPS often isn't an option. For that, we have Distillery releases. However, that requires me to either have a separate server for staging to use as a build server, or to keep a particular version of Erlang installed on my VPS, neither of which sound like great options to me and they all have the possibilities of version mismatches with ERTS. In addition to all this, theres a whole lot of configuration which needs to be done to setup a Phoenix app for deployment, and it's hard to remember.

For that reason, I wanted to use Docker so that all of my deployments would be automated and reproducable. In addition, Docker would allow me to have reproducable builds for my releases. I could build my releases on any machine that I wanted in a contai

Blogs

Understanding Elixir Macros, Part 1 by Saša Jurić (more: Part 2 Part 3 Part 4 Part 5 Part 6)

Books

Metaprogramming Elixir by Chris McCord

Official Documentation

Prolog

Google Chrome Developers says:

The new WOFF 2.0 Web Font compression format offers a 30% average gain over WOFF 1.0 (up to 50%+ in some cases). WOFF 2.0 is available since Chrome 36 and Opera 23.

Some examples of file size differences: WOFF vs. WOFF2

TTF to WOFF2 converting

http://www.fontsquirrel.com/tools/webfont-generator

	defprotocol Functor do
	def fmap(data, func)
	end

	defprotocol Applicative do
	def pure(data)
	def run(wrapped_func, data)
	end

	defprotocol Monad do

	#https://gist.github.com/tlowrimore/5162327
	#http://stackoverflow.com/a/15413611/270511

	module ActiveRecord::UnionScope
	def self.included(base)
	base.send :extend, ClassMethods
	end

	module ClassMethods
	def union_scope(*scopes)

	## Get FFMpeg working on heroku by building binaries using vulcan

	gem install vulcan

	vulcan create foo

	git clone --depth 1 git://source.ffmpeg.org/ffmpeg

	cd ffmpeg

	'''
	Question 1
	Many Time Pad

	Let us see what goes wrong when a stream cipher key is used more than once. Below are eleven
	hex-encoded ciphertexts that are the result of encrypting eleven plaintexts with a stream
	cipher, all with the same stream cipher key. Your goal is to decrypt the last ciphertext,
	and submit the secret message within it as solution.

	Hint: XOR the ciphertexts together, and consider what happens when a space is XORed with

	$stack, $draws = [], {}

	def method_missing *args
	return if args[0][/^to_/]
	$stack << args.map { \|a\| a or $stack.pop }
	$draws[$stack.pop(2)[0][0]] = args[1] if args[0] == :<
	end

	class Array
	def +@

	#!/usr/bin/env ruby
	#
	# Ruby methods for protecting against timing attacks
	#

	module ExpressionTimer

	# a shortcut to ExpressionTimer.send that passes in the object for which this module
	# was included
	#