- Jim Weirich: The Building Blocks of Modularity – http://goo.gl/g4Nk
- Jim Weirich: SOLID Ruby – http://goo.gl/z3jd
- Sandi Metz: SOLID Object-Oriented Design – http://goo.gl/PDn6T
- Sandi Metz: Less – The Path to Better Design – http://goo.gl/VuTl4
- Demeter is for Encapsulation – http://is.gd/eeyLx
- Opinionated Modular Code – http://is.gd/eeyXm
- Scaling to Hundreds of Millions of Requests – http://vimeo.com/12814529
- Confident Code – http://goo.gl/VFLX
- Destroy All Software Screencasts – https://www.destroyallsoftware.com/screencasts
- Corey Haines: Fast Rails Tests – http://goo.gl/Va2gb
=Navigating= | |
visit('/projects') | |
visit(post_comments_path(post)) | |
=Clicking links and buttons= | |
click_link('id-of-link') | |
click_link('Link Text') | |
click_button('Save') | |
click('Link Text') # Click either a link or a button | |
click('Button Value') |
# see http://stackoverflow.com/questions/5880962/how-to-destroy-jobs-enqueued-by-resque-workers - old version | |
# see https://github.com/defunkt/resque/issues/49 | |
# see http://redis.io/commands - new commands | |
namespace :resque do | |
desc "Clear pending tasks" | |
task :clear => :environment do | |
queues = Resque.queues | |
queues.each do |queue_name| | |
puts "Clearing #{queue_name}..." |
# 0 is too far from ` ;) | |
set -g base-index 1 | |
# Automatically set window title | |
set-window-option -g automatic-rename on | |
set-option -g set-titles on | |
#set -g default-terminal screen-256color | |
set -g status-keys vi | |
set -g history-limit 10000 |
class Api::RegistrationsController < Api::BaseController | |
respond_to :json | |
def create | |
user = User.new(params[:user]) | |
if user.save | |
render :json=> user.as_json(:auth_token=>user.authentication_token, :email=>user.email), :status=>201 | |
return | |
else |
# app/models/ability.rb | |
# All front end users are authorized using this class | |
class Ability | |
include CanCan::Ability | |
def initialize(user) | |
user ||= User.new | |
can :read, :all |
WAL-E needs to be installed on all machines, masters and slaves.
Only one machine, the master, writes WAL segments via continuous archiving. The configuration for the master postgresql.conf
is:
archive_mode = on
archive_command = 'envdir /etc/wal-e.d/env wal-e wal-push %p'
archive_timeout = 60
create different ssh key according the article Mac Set-Up Git
$ ssh-keygen -t rsa -C "your_email@youremail.com"
Many programming languages, including Ruby, have native boolean (true and false) data types. In Ruby they're called true
and false
. In Python, for example, they're written as True
and False
. But oftentimes we want to use a non-boolean value (integers, strings, arrays, etc.) in a boolean context (if statement, &&, ||, etc.).
This outlines how this works in Ruby, with some basic examples from Python and JavaScript, too. The idea is much more general than any of these specific languages, though. It's really a question of how the people designing a programming language wants booleans and conditionals to work.
If you want to use or share this material, please see the license file, below.
# every 5 minutes run this script ↓ | |
*/12 * * * * /path/to/kill_memleaked_rails.sh |