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# Currently, you have to roll your own associations if you want to chain scopes through collections.
# I'm interested to see if there is an existing (generalised) way to do this with AR.
# If not, feedback on the value and interface (method chaining?) for collection associations would be appreciated.

# gem install activerecord
# gem install sqlite3

require 'active_record'

ActiveRecord::Base.establish_connection(:adapter => 'sqlite3', :database => ':memory:')

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class TagMigrator
  class << self

    def list_tags(search_term = nil)
      puts Tag.where('name like ?', "%#{search_term}%").order(:name).map(&:name)
    end

    def migrate!(old_name, new_name)
      if old_name.downcase == new_name.downcase
        rename!(old_name, new_name)

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1.upto(254).map.with_object({}) { |i, o| n = `dig -x 192.168.1.#{i} +short`; o[i] = n unless n.empty? }

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def http_authenticate
  user, pass = ENV['USERNAME'], ENV['PASSWORD']
  if request
    basic = ActionController::HttpAuthentication::Basic
    request.env['HTTP_AUTHORIZATION'] = basic.encode_credentials(user, pass)
  end
  page.driver.browser.authorize user, pass
end

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.highlight .err {
    color: #a61717;
    background-color: #e3d2d2;
}

.highlight .k {
    font-weight: bold;
}

.highlight .o {

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# Heroku doesn't get on too well with Pygments:
# LoadError: Could not open library '/usr/local/lib/libpython2.7.a': /usr/local/lib/libpython2.7.a: invalid ELF header 

# To fix:

# Gemfile
gem 'rubypython', '=0.5.1'

# config/initializers/pygments.rb
RubyPython.configure :python_exe => 'python2.6'

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def my_action
  response.headers['Cache-Control'] = 'no-store' if request.xhr?
  # ...
end

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var MyApp = {};

MyApp.memoizer = function (memo, formula) {
  var recur, result;

  recur = function (n) {
    result = memo[n];
    if (typeof result !== 'number') {
      result = formula(recur, n);
      memo[n] = result;

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// Dependencies: jQuery

// Declare a namespace object for your application to avoid clobbering global variables.

var MyNamespace = {};

// Define a 'loader' method that attaches modular functions to DOM elements.

MyNamespace.loader = function (el) {
  $('[data-module]', el).each(function () {

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on run {input, parameters}
	if (count of input) > 0 then
		tell application "System Events"
			set runs to false
			try
				set p to application process "iTerm"
				set runs to true
			end try
		end tell
		tell application "iTerm"