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defmodule Parser do
  import NimbleParsec

  game_id = ignore(string("Game ")) |> integer(min: 1, max: 4) |> unwrap_and_tag(:id)

  red = replace(string("red"), :red)
  green = replace(string("green"), :green)
  blue = replace(string("blue"), :blue)

  color = choice([red, green, blue])

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defmodule Replacer do
  import NimbleParsec
  one = string("o") |> lookahead(string("ne")) |> replace("1")
  two = string("t") |> lookahead(string("wo")) |> replace("2")
  three = string("t") |> lookahead(string("hree")) |> replace("3")
  four = string("f") |> lookahead(string("our")) |> replace("4")
  five = string("f") |> lookahead(string("ive")) |> replace("5")
  six = string("s") |> lookahead(string("ix")) |> replace("6")
  seven = string("s") |> lookahead(string("even")) |> replace("7")
  eight = string("e") |> lookahead(string("ight")) |> replace("8")

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signing_salt = :crypto.strong_rand_bytes(8) |> Base.encode16()
secret_base = :crypto.strong_rand_bytes(32) |> Base.encode16()

Application.put_env(:phoenix, :json_library, Jason)

Application.put_env(:sample, SamplePhoenix.Endpoint,
  adapter: Bandit.PhoenixAdapter,
  http: [
    ip: {127, 0, 0, 1},
    port: String.to_integer(System.get_env("PORT") || "4000")

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Screencasting Framework

The following document is a written account of the Code School screencasting framework. It should be used as a refernce of the accompanying screencast on the topic.

Why you should care about screencasting?

You're probably aren't going to take the time to read this document if you're not interested, but there are a lot of nice side effects caused by learning how to create quality screencasts.

1. Communicating more effectively - At Envy Labs we produce screencasts for our clients all the time. Whether it's demoing a new feature or for a presentation for an invester, they're often much more effective and pleasent than a phone call or screen sharing.

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desc 'rolls back migrations in current branch not present in other'
task :rollback_branch_migrations, [:other_branch] do |t, args|
  load "#{Dir.pwd}/Rakefile"

  branch_migrations = BranchMigrations.new(args.other_branch)

  puts ['Rollback the following migrations', branch_migrations, 'y,n? ']
  next if %w[no n NO N].include?(STDIN.gets.chomp)

  Rake::Task['environment'].invoke

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ActiveSupport.on_load(:active_record) do
  module Arel::NullsLastPredications
    def nulls_last
      Arel::Nodes::NullsLast.new self
    end
  end

  module Arel::Nodes
    class NullsLast < Unary
      def gsub *args

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import Ember from 'ember';

export default Ember.Component.extend({
  didInsertElement: function() {
    this._super();
    this.player = videojs(this.$('video')[0], null, function() {
      this.play();
    });
  },
  didRender: function() {

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$ chmod +x wc.rb
$ echo "hello, world" | ./wc.rb
       1       2      13
$ printf "line 1\nline 2\n" | ./wc.rb
       2       4      14

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#! /usr/bin/env ruby

require 'bundler/inline'

gemfile do
  gem 'rspec', '3.7', require: false
end

class Program
  def initialize(input)

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$ rspec wc.rb
....

Finished in 0.00348 seconds (files took 0.19061 seconds to load)
4 examples, 0 failures