djo

words = ['qwerty', 'abcdef', 'xyzzyx']
SecureRandom.stub(:base64) { words.shift }

SecureRandom.base64.should eq('qwerty')
SecureRandom.base64.should eq('abcdef')
SecureRandom.base64.should eq('xyzzyx')

djo

# ./Gemfile

source "http://rubygems.org"

gem "sinatra", "~> 1.3.1"

group :test do
  gem "rspec", "~> 2.7.0"
  gem "rack-test", "~> 0.6.1"
  gem "fuubar", "~> 0.0.6"

djo

- if Rails.env.test?
  :javascript
    $.fx.off = true;

djo

// iframe auto-height

(function ($) {

  $.fn.autoheight = function () {
    return this.each(function () {
      var iframe = $(this);
      var height = iframe.contents().find('body').height() + 20;
      iframe.height(height);
    });

djo

# Enforce that all models define their accessible attributes
config.active_record.whitelist_attributes = true

djo

# Change mass-assignment protection strategy to black-list to allow updates of virtual attributes
Delayed::Job.attr_protected nil

djo

# Problem 1 of 3: Math
# ====================
#
# n! means n * (n - 1) * ... * 3 * 2 * 1
# For example, 10! = 10 * 9 * ... * 3 * 2 * 1 = 3628800
# Let R(n) equal the sum of the digits in the number n!
# For example, R(10) is 3 + 6 + 2 + 8 + 8 + 0 + 0 = 27.
# Find the lowest value for n where R(n) is 8001.
#
# Result: 787.

djo

# Monitor some background process on execution
watch -n 1 "ps aux | grep php"

djo

# Example for http://rungist.com/

about = ".xobdnas ybur eht ni tsig s'buhtig a nur ot uoy swolla tI .ybuR yrT rehtonA teY eht si sihT"
"Hi, #{about.reverse}"

djo

Upgrade "the second project" to ruby 1.9 notes

Gems

Keep in mind that not all gems (versions) support a needed ruby version.

• Remove 1.8 gems: rcov, ruby-debug
• Add 1.9 gems: debugger

Try 'bundle install'.