isaacs

echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
. ~/.bashrc
mkdir ~/local
mkdir ~/node-latest-install
cd ~/node-latest-install
curl http://nodejs.org/dist/node-latest.tar.gz | tar xz --strip-components=1
./configure --prefix=~/local
make install # ok, fine, this step probably takes more than 30 seconds...
curl https://www.npmjs.org/install.sh | sh

jcasimir

Polymorphism

Sometimes relationships need to be flexible, and that's where we look to polymorphism. Say we want to implement:

• A Person
• A Company
• A PhoneNumber that can connect to a Person or a Company

At the Database Level

nesquena

Jbuilder.encode do |json|
  json.content format_content(@message.content)
  json.(@message, :created_at, :updated_at)

  json.author do |json|
    json.name @message.creator.name.familiar
    json.email_address @message.creator.email_address_with_name
    json.url url_for(@message.creator, format: :json)
  end

robotarmy

gem 'sinatra'
group :development,:test do
  gem 'rspec'
  gem 'rack-test'
end

panthomakos

#!/usr/bin/env ruby

require 'benchmark'

REGEXPS = [
  /^no such file to load -- (.+)$/i,
  /^Missing \w+ (?:file\s*)?([^\s]+.rb)$/i,
  /^Missing API definition file in (.+)$/i,
  /^cannot load such file -- (.+)$/i,
]

IanVaughan

#!/usr/bin/env bash

uninstall() {
  list=`gem list --no-versions`
  for gem in $list; do
    gem uninstall $gem -aIx
  done
  gem list
  gem install bundler
}

wjlroe

Problem

You wanna serve up static files, but are bored by the usual trick of:

python -m SimpleHTTPServer

This is pretty simple but why type this every time? Let's use Pow for some zero-effort web serving. If you have Pow already set up, then just drop the provided config.ru file into the root of your static files. Then link your directory into ~/.pow so Pow can see it and that's it!

Let's say you have a directory with mockups you wanna show people, they are in ~/Dropbox/Mockups/ then you might do this:

regedarek

# autoload concerns
module YourApp
  class Application < Rails::Application
    config.autoload_paths += %W(
      #{config.root}/app/controllers/concerns
      #{config.root}/app/models/concerns
    )
  end
end

mostlyobvious

Steps to set up a Rails development environment on OS X:

• install Apple Command Line Tools
• install homebrew[1]: ruby -e "$(curl -fsSkL raw.github.com/mxcl/homebrew/go)"
• install rvm: curl -L https://get.rvm.io | bash -s stable
• source $HOME/.rvm/scripts/rvm
• rvm install --disable-binary 1.9.3
• rvm use --default 1.9.3

mytrile

# config/application.rb

module YourApp
  class Application < Rails::Application
    config.autoload_paths += %W(#{config.root}/lib/devise)
    # rest of the file
  end
end