marianposaceanu

• Authoring Ebooks: http://www.authoringebooks.com/
• Create Your Own Programming Language: http://createyourproglang.com/
• Exceptional Ruby: http://exceptionalruby.com/
• JavaScript Performance Rocks: http://javascriptrocks.com/performance/
• Redmine Tips: http://www.redminetips.com/
• The SPDY Book: http://spdybook.com/
• Rails 3 Upgrade Handbook: http://www.railsupgradehandbook.com/
• Refactoring Redmine: http://www.refactoringredmine.com/book/
• Bootstrapping Design: http://bootstrappingdesign.com/
• Recipes With Backbone:

marianposaceanu

Data visualization in one of three most important steps in data mining (https://github.com/entaroadun/hnpickup). Often times, it's impossible to understand data without proper visualization. I went looking for great tools to do that.

Two website list recent JS visualization frameworks:

• http://www.splashnology.com/article/15-awesome-free-javascript-charts/325/
• http://sixrevisions.com/javascript/20-fresh-javascript-data-visualization-libraries/

Most of them are available on Github. My three favorite:

• https://github.com/DmitryBaranovskiy/g.raphael

marianposaceanu

class Lisp
  def initialize
    @env = { 
      :label => lambda { |(name,val), _| @env[name] = val },
      :quote => lambda { |sexpr, _| sexpr[0] },
      :car   => lambda { |(list), _| list[0] },
      :cdr   => lambda { |(list), _| list.drop 1 },
      :cons  => lambda { |(e,cell), _| [e] + cell },
      :eq    => lambda { |(l,r), _| l == r },
      :if    => lambda { |(cond, thn, els), ctx| eval(cond, ctx) ? eval(thn, ctx) : eval(els, ctx) },

marianposaceanu

require 'amqp'
module HiringThingEM
  def self.start
    if defined?(PhusionPassenger)
      PhusionPassenger.on_event(:starting_worker_process) do |forked|
      # for passenger, we need to avoid orphaned threads
        if forked && EM.reactor_running?
          EM.stop
        end
        Thread.new {

marianposaceanu

require 'sinatra'
require 'redis'
require 'json'
require 'date'

class String

  def &(str)
    result = ''
    result.force_encoding("BINARY")

marianposaceanu

CPU

• L1 cache reference 0.5 ns
• Branch mispredict 5 ns (on a bad CPU architecture you're pretty much screwed)
• L2 cache reference 7 ns
• Mutex lock/unlock 25 ns
• Main memory reference 100 ns
• Compress 1K bytes with Zippy 3,000 ns
• Send 2K bytes over 1 Gbps network 20,000 ns
• Read 1 MB sequentially from memory 250,000 ns

marianposaceanu

Sinatra like routes in Rails controllers

A proof of concept of having Sinatra like routes inside your controllers.

How to use

Since the router is gone, feel free to remove config/routes.rb. Then add the file below to lib/action_controller/inline_routes.rb inside your app.

marianposaceanu

/*
 * log= (insanity?)
 * http://benalman.com/
 *
 * Copyright (c) 2012 "Cowboy" Ben Alman
 * Licensed under the MIT license.
 */

Object.defineProperty(global, 'log', {
  set: function(args) {

marianposaceanu

/**********************************************/
/*
/* IR_Black Skin by Ben Truyman - 2011
/*
/* Based on Todd Werth's IR_Black:
/* http://blog.toddwerth.com/entries/2
/*
/* Inspired by Darcy Clarke's blog post:
/* http://darcyclarke.me/design/skin-your-chrome-inspector/
/*

marianposaceanu

Installation commands:

$ wget http://redis.googlecode.com/files/redis-2.4.8.tar.gz
$ tar xvfz redis-2.4.8.tar.gz 
$ cd redis-2.4.8/
$ mkdir -p /opt/redis
$ make PREFIX=/opt/redis install
$ cp redis.conf /opt/redis/redis.conf
$ chown -R redis:redis /opt/redis