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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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#!/usr/bin/ruby

# Run in the root directory of a git repository with ruby commits.rb
# Depends upon the 'rmagic' and 'gruff' gems.

require 'rubygems'
require 'gruff'

commits = `git shortlog -ns`.split("\n").map { |e| e.strip.split("\t") }.map { |n, a| [a, n.to_i] }

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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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/*
Copyright (c) 2017 Chris Patuzzo
https://twitter.com/chrispatuzzo

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

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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;