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# we're using the TmpIO class
# -*- encoding: binary -*-
# :stopdoc:
require 'tmpdir'
# some versions of Ruby had a broken Tempfile which didn't work
# well with unlinked files.  This one is much shorter, easier
# to understand, and slightly faster.
class TmpIO < File

  # creates and returns a new File object.  The File is unlinked

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require 'json'

# r, w = IO.pipe
# w << 'secret'
# w << ' message'
# w.close_write
# r.read #=> "secret message"

# if fork
#   wr.close

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• 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:

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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

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Windows 7 Tweaks

The analysis will take 60 seconds (which you can change with the optional - duration switch), after which powercfg will save its report as an HTML file on your desktop. Just double-click output.html to view the report.

powercfg -energy -output %userprofile%\desktop\output.html

Enabling this setting will prevent Windows from paging certain system processes to disk

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management

DisablePagingExecutive // Values: 0 = disabled (default), 1 = enabled.

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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) },

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# For vs. each
# Results:
#
#      user     system      total        real
#  0.340000   0.000000   0.340000 (  0.341422)
#  0.310000   0.000000   0.310000 (  0.326168)
require 'benchmark'

n = 500000

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Install RVM

bash < <(curl -s https://rvm.beginrescueend.com/install/rvm)
echo '[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" 
function' >> ~/.bash_profile

Install GCC 4.2

Grab and unpack the tarball

$ mkdir ~/tmp && cd ~/tmp

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Disable dashboard (free ram and stuff)

defaults write com.apple.dashboard mcx-disabled -boolean YES
killall Dock

Purge RAM (tip: install xcode 1st)

In terminal > purge # then wait

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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 {