aalin

class CaseComparator
  def initialize(object, operator)
    @object = object
    @operator = operator
  end

  def ===(other)
    other.send(@operator, @object)
  end
end

aalin

#!/usr/bin/env ruby

`git diff --cached --name-only --diff-filter=AM`.lines.each do |filename|
  path = File.join(Dir.pwd, filename.strip)
  puts "Checking syntax of #{ filename.strip }"
  case filename
  when /.haml$/
    exit 1 unless system('haml', '--check', path)
  when /.scss$/
    exit 1 unless system('scss', '--check', path)

aalin

# This is not the best example, but imagine a Rails project with lots of complex logic and methods and stuff...
# Imagine that Base is an 500 line ActiveRecord model... :)

require 'rubygems'
require 'active_support/core_ext'
Customer = Struct.new(:id, :first_name, :last_name, :company_name)

## Implementation directly in the class

# Pros:

aalin

# changed line 19 of rubygems/ext/builder.rb from:
mf = File.read('Makefile') 
# into
mf = File.read('Makefile', :encoding => 'iso-8859-15').encode('utf-8')


# Problem was that qmake generated a Makefile that included a latin 1 "å" in the date because of swedish locales...

aalin

#!/usr/bin/env ruby
# encoding: utf-8

require 'yaml'
require 'stringio'

class LocaleFormatter
  ESCAPE_KEYS = %w(true false yes no on off)
  ESCAPE_VALUE_RE = /[^[:alnum:]_\-\/\.\?]/
  MULTILINE_INDENT_LEVEL = 2

aalin

# encoding: utf-8

class LocaleDiffer
  RED = 31
  GREEN = 32

  def initialize
    load_locales
  end

aalin

class ActiveRecord::SchemaDumper
  def dump(stream)
    header(stream)
    tables(stream)
    sequences(stream)
    sequence_defaults(stream)
    trailer(stream)
    stream
  end

aalin

module I18n
  # Usage (Haml in examples):
  #
  #   - t_scope(:"public.sign_up_or_log_in") do |s|
  #     = simple_format(s.t(:text,
  #       sign_up: link_to(s.t(:sign_up), signup_path),
  #       log_in: link_to(s.t(:log_in), login_path)))
  #
  # is equivalent to
  #

aalin

# This takes about 1.6 seconds for 800x600
def short_screenshot!(width, height)
  pixels = glReadPixels(0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE)
  image = ChunkyPNG::Image.from_rgb_stream(width, height, StringIO.new(pixels))
  image.flip_horizontally!
  image.save('screenshot.png', :fast_rgb)
end

# This takes about 0.8 seconds for 800x600
def long_screenshot!(width, height)

aalin

# Based on https://github.com/Sojo-Studios/catmull-rom/blob/master/test.js
# This implementation assumes circular splines.

class CatmullRomSplines
  def initialize(points)
    @key_points = points
  end

  def generate(detail)
    points = []