danneu

require 'anemone'
require 'mongo'

# Patterns
POST_WITHOUT_SLASH  = %r[\d{4}\/\d{2}\/[^\/]+$]   # http://isbullsh.it/2012/66/here-is-a-title  (301 redirects to slash)
POST_WITH_SLASH     = %r[\d{4}\/\d{2}\/[\w-]+\/$] # http://isbullsh.it/2012/66/here-is-a-title/
ANY_POST            = Regexp.union POST_WITHOUT_SLASH, POST_WITH_SLASH 
ANY_PAGE            = %r[page\/\d+]               # http://isbullsh.it/page/4 
ANY_PATTERN         = Regexp.union ANY_PAGE, ANY_POST

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# Cache a func with multiple args like Math.max(1, 2, 3)
Function::cached = ->
  cache = {}
  (args...) => # Note: could've used a regular `->` and keep the `self = @`
    argsKey = args.join()  
    if argsKey of cache 
      console.log "Hitting cache with #{argsKey}"
      return cache[argsKey]
    console.log "Cache miss..."
    return cache[argsKey] = @(args...)

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// Javascript 

// #1
console.log(hello()); //=> undefined
function hello() {}

// #2
console.log(hello()); //=> ReferenceError: hello not defined
hello = function() {}

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// Async web fetch with JSON parse

    [NSURLConnection sendAsynchronousRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"url"]]
                                       queue:nil completionHandler:^(NSURLResponse *r, NSData *d, NSError *e) {
                                           NSDictionary *json = [NSJSONSerialization JSONObjectWithData:d
                                                                                                options:0
                                                                                                  error:nil];
                                       }];

// Using the camera 

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class ExampleClass
  @variable = "foo"
  @@variable = "bar"
  
  def initialize
    @variable = "baz"
  end
  
  def self.test
    puts @variable

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# db/migrate/20121019202052_create_posts.rb
class CreatePosts < ActiveRecord::Migration
  def up
    create_table :posts do |t|
      t.string :title
      t.text :body
      t.timestamps
    end
    Post.create(title: "My first post", body: "And this is the post's content.")
    Post.create(title: "How to lasso your dog", 

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# app/controllers/users/password_controller.rb

class Users::PasswordsController < Devise::PasswordsController
  def resource_params
    params.require(:user).permit(:email, :password, :password_confirmation)
  end
  private :resource_params
end

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require "em-proxy"
listen_point = { host: "0.0.0.0", port:8080 }
relay_point  = { host: 'stream.twitter.com', port: 443 }
puts "Proxy listening"
Proxy.start(listen_point) do |conn|
  conn.server :twitter, relay_point
  conn.on_data { |data| data } 
  conn.on_finish { |backend, name| unbind }
  conn.on_response { |backend, res| 
    print "."

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# I'm no benchmark guru. Just did a bunch of:
$ time ruby <filename>

# Note: This is just an 80mb XML file with 38,000 nodes.

ox_dom.rb        4.56s  user 0.78s system 93% cpu 5.714  total (550mb)
ox_dom.rb        4.58s  user 0.79s system 87% cpu 6.126  total (550mb)
ox_dom.rb        4.60s  user 0.80s system 87% cpu 6.140  total (550mb)
nokigiri_dom.rb  11.75s user 1.02s system 94% cpu 13.518 total (895mb)
nokigiri_dom.rb  11.36s user 1.02s system 93% cpu 13.211 total (895mb)

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# documents controller
def show
  @document = Document.find(params[:id])
  @sections = @document.sections
end


# /views/document/show.erb
<h1>@document.name<h1>
@sections.each do |section|