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L1 cache reference                          0.5 ns
Branch mispredict                             5 ns
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
Round trip within same datacenter       500,000 ns
Disk seek                            10,000,000 ns

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"""PyObjC keylogger for Python
by  ljos https://github.com/ljos
"""

from Cocoa import *
from Foundation import *
from PyObjCTools import AppHelper

class AppDelegate(NSObject):
    def applicationDidFinishLaunching_(self, aNotification):

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Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

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#!/usr/bin/env python

EMR_COMMAND = os.path.expanduser('~/elastic-mapreduce/elastic-mapreduce')
EMR_LOGGING_DIR = "s3://songkick/emr-logs"

def create_pig_job_flow(pigscript, num_instances=1, extraArguments=[]):
  jobname = "Pig_Daily_" + datetime.datetime.now().strftime('%Y%m%d-%H%M%S')
  print "Creating pig job flow", jobname, pigscript
  args = [EMR_COMMAND,
    "--create",

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library(data.table);
library(maps);
library(maptools);
library(spatstat);
library(zipcode);
library(GISTools)
#load the zipcode dataset
data(zipcode);

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import sys
import subprocess
import tempfile
import urllib

text = sys.stdin.read()

chart_url_template = ('http://chart.apis.google.com/chart?'
                      'cht=qr&chs=300x300&chl={data}&chld=H|0')
chart_url = chart_url_template.format(data=urllib.quote(text))

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import sys
import subprocess
import tempfile
import urllib

text = sys.stdin.read()

chart_url_template = ('http://chart.apis.google.com/chart?'
                      'cht=qr&chs=300x300&chl={data}&chld=H|0')
chart_url = chart_url_template.format(data=urllib.quote(text))

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desc "install R packages"
task :install_R_packages do
  R_packages = File.read("#{release_path}/R_packages.txt").lines.map { |line| line.strip }

  R_package_cmd = R_packages.map do |package|
    'if(!require(\"'+package+'\")){ install.packages(\"'+package+'\",lib=c(\"'+shared_path+'/R\"), repos=\"http://cran.cnr.
berkeley.edu/\"); };'
  end.join(' ')

  sudo "sh -c 'if [ ! -d #{shared_path}/R ]; then mkdir #{shared_path}/R; fi'"

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after("deploy:update_code") do
  deploy.install_R_packages
end

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The INSTALL instructions that come with Vowpal Wabbit appear not to work on Mac OS X Lion. Here's what I did to get it to compile. You will need the developer tools that come with the XCode installation.

The only dependency VW has is the boost C++ library. So first, download and install Boost

To install Boost, do the following:

$ cp ~/Downloads/boost_1_48_0.tar.bz2 ./