woodie

Rails 3.0.pre on App Engine¶ ↑

You can Rails 3 on App Engine, but it won’t be especially useful until bundler 10. You should try these instead:

• Rails 2.3.5: DataMapper version: gist.github.com/268192

• Rails 2.3.5: TinyDS version: gist.github.com/269075

Install the Development Environment¶ ↑

The gems for the development environment include a pre-release appengine-tools gem that provides a pre-release version of jruby-rack.

woodie

Rails 2.3.8 on App Engine (DataMapper)¶ ↑

Do not use rvm (or install and run from JRuby). The google-appengine gem must install into your system MRI. The appengine-sdk gem includes a complete Java app server. We bootstrap Java from MRI, then your app runs inside a servlet container (with access to all the APIs) using the version of JRuby installed into each app.

We assumed Rails 2 would never work without rubygems, and we committed to gem bunlder for JRuby on App Engine, so we were waiting for Rails 3. Fortunately, Takeru Sasaki was able to patch the Rails 2.3.x calls to rubygems, and now we have it working. Rails 2.3.x currently spins up several seconds faster than Rails 3, and just a few seconds behind Sinatra.

See the TInyDS version also: gist.github.com/gists/269075

Install the Development Environment¶ ↑

dfurber

# These are my notes from the PragProg book on CoffeeScript of things that either 
# aren't in the main CS language reference or I didn't pick them up there. I wrote 
# them down before I forgot, and put it here for others but mainly as a reference for 
# myself.

# assign arguments in constructor to properties of the same name:
class Thingie
    constructor: (@name, @url) ->

# is the same as:

Jxck

/**
 * The sample usage of ECMA 5 Mozilla Features Implemented in V8
 * https://github.com/joyent/node/wiki/ECMA-5-Mozilla-Features-Implemented-in-V8
 * You can use thease new feature of ECMA5 on Node.js as you like.
 * because there is no IE :)
 * Order is deferent form original wiki.
 * Sources are Checked on Node.js v0.5.0(unstable), v0.4.9(stable)
 *
 * you can execute this file.
 * $ node ecma5_on_v8.js

hopsoft

# app/models/user.rb
class User < ActiveRecord::Base
end

# lib/user_logger.rb
module UserLogger
  def self.included(mod)
    mod.send :after_create, :log_creation
  end

ShirtlessKirk

/**
 * Luhn algorithm in JavaScript: validate credit card number supplied as string of numbers
 * @author ShirtlessKirk. Copyright (c) 2012.
 * @license WTFPL (http://www.wtfpl.net/txt/copying)
 */
var luhnChk = (function (arr) {
    return function (ccNum) {
        var 
            len = ccNum.length,
            bit = 1,

ndarville

Business Models

Advertising

Models	Examples
Display ads	Yahoo!
Search ads	Google

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

M1ke

var interval=setInterval(function(){
  $('.user-actions.including .retweet-off-text').last().click();
  if ($('.user-actions.including .retweet-off-text').length<1) {
    clearInterval(interval);
  }
},20000);

ragingwind

Backend Architectures

Twitter

ror, scala, jetty, erlang, thrift, mongrel, comet server, my-sql, memchached, varnish, kestrel(mq), starling, gizzard, cassandra, hadoop, vertica, munin, nagios, awstats

• Introduce Gizzard of Twitter - 트위터의 새로운 분산 관리 라이브러리 Gizzard를 소개합니다.
• The Architecture Twitter Uses to Deal with 150M Active Users, 300K QPS, a 22 MB/S Firehose, and Send Tweets in Under 5 Seconds
• Scaling Twitter: Making Twitter 10000 Percent Faster