ankane

#!/bin/bash

# From http://chrismccord.com/blog/2013/01/09/better-heroku-db-push-and-db-pull/
#
# Postgres equivalent to heroku db:push.
# Pushes local database up to heroku application database.
#
# Requirements: psql --version >= 9.2.2
#
# Usage:

ankane

output = %x[heroku apps]
repos = output.split("\n").select{|line| line.length > 0 and line[0..2] != "===" }.map{|line| line.split[0] }
repos.each do |repo|
  unless Dir.exists?(repo)
    puts %x[git clone [email protected]:#{repo}.git]
  end
end

ankane

cd /tmp
wget http://apache.mirrors.pair.com/httpd/httpd-2.4.2.tar.bz2
tar xzvf httpd-2.4.2.tar.bz2
cd httpd-2.4.2
./configure
make
sudo cp support/ab /usr/sbin

ankane

# http://en.wikipedia.org/wiki/F1_score
# true positives, false positives, false negatives
def f1_score(tp, fp, fn)
  precision = tp / (tp + fp).to_f
  recall = tp / (tp + fn).to_f
  2.0 * precision * recall / (precision + recall)
end

ankane

class EmailValidator < ActiveModel::EachValidator
  def validate_each(record, attribute, value)
    record.errors[attribute] << (options[:message] || "is not an email") unless
      value =~ /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i
  end
end

ankane

/*
* Preload images that aren't visible on page load
* Works for images and background images
*
* $("#img1, #div2").preload()
*/

$.fn.preload = function() {
  this.each( function() {
    src = $(this).attr("src");