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require 'benchmark'

array = (0..10000000).to_a

benchmark = Benchmark.bm(10) do |x|
  x.report("Ruby 2.0:   ") do
    100000.times { array.bsearch { |e| 7777777 <=> e } }
  end
  require 'bsearch'
  x.report("bsearch gem:") do

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Rails 4 New Features

Noisebridge Ruby and Rails Class

2013-01-08

Gabe Kopley

gabe@railsschool.org

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gabe2@moth:~/play $ diff rails-standard-app/Gemfile.lock rails-api-app/Gemfile.lock 
33,39d32
<     coffee-rails (3.2.2)
<       coffee-script (>= 2.2.0)
<       railties (~> 3.2.0)
<     coffee-script (2.2.0)
<       coffee-script-source
<       execjs
<     coffee-script-source (1.4.0)
41,42d33

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source 'https://rubygems.org'

gem 'rails', '3.2.3'

# authentication
gem 'devise'

# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'

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# This simple solution permanently adds a method on Object that
# will never be used outside this file.

def compile_asset?(path)
  # ... lots of complicated logic ...
  # returns boolean
end

Foo::Application.configure do
  ...

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|| and && bind with the precedence that you expect from boolean operators in programming languages (&& is very strong, || is slightly less strong).

and and or have lower precedence.

For example, unlike ||, or has lower precedence than =:

> a = false || true
 => true 
> a

=> true

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source "https://rubygems.org"

# these are the Ruby bindings for the etherpad-lite API
gem "etherpad-lite"

# leverages unix diff to discover changes to pad content
gem "diff-lcs"

# boilerplate debugging tool
gem "pry"

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require 'etherpad-lite'
require 'piggy_latin'
require 'pry'
require 'pry-nav'

ether = EtherpadLite.connect('http://pad.coshx.com', 'KHoaXT0XuEH2lkXkeAmYry4W3k1emR15')

pad = ether.pad('noisebridge')
i = 0

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$(document).ready ->
  ws = new WebSocket("ws://localhost:9000/chat")

  ws.onopen = ->
    console.log "connected..."

  ws.onmessage = (event) ->
    console.log event
    $("<li>#{event.data}</li>").prependTo("#msg")

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require 'bundler/setup'
Bundler.require

require 'goliath/websocket'

class Chat < Goliath::WebSocket
  include Goliath::Rack::Templates

  def on_open(env)
    env.logger.info("CHAT OPEN")