railscard

require 'open3'
require 'net/http'
require 'json'

class String
  def green;          "\e[32m#{self}\e[0m" end
  def brown;          "\e[33m#{self}\e[0m" end
  def blue;           "\e[34m#{self}\e[0m" end
  def gray;           "\e[37m#{self}\e[0m" end
  def magenta;        "\e[35m#{self}\e[0m" end

railscard

module UnicodeStringUtils
  def downcase(input)
    input.to_s.mb_chars.downcase
  end

  def upcase(input)
    input.to_s.mb_chars.downcase
  end
end

railscard

imgColorAt := img.At(x, y)

red, green, blue, alpha := imgColorAt.RGBA()

rgbaColor := color.RGBA{uint8(red >> 8), uint8(green >> 8), uint8(blue >> 8), uint8(alpha >> 8)}

fmt.Println(imgColorAt) // Will print {255 255 255 0}
fmt.Println(rgbaColor) // Will be {0 0 0 0}

railscard

module UserMacros
  def make_user_and_login(user = nil)
    user ||= FactoryGirl.create(:user)
    visit new_user_session_path
    page.should have_selector('title', :text => 'Login')
    fill_in('Email',    :with => user.email)
    fill_in('Password', :with => user.password)
    click_button('Login')
    page.should have_selector('title', :text => 'Home')
  end

railscard

#!/bin/bash
#
# Converts all files in current directory
# from bson format to json and import
# them to mongodb collection.
#
# Usage:
# Put this script in bson files directory,
# run chmod +x bsonexport.sh
#

railscard

require 'anemone' 

Anemone.crawl("http://stackoverflow.com/", {:proxy_host => 'proxy.xyz.com', :proxy_port => '9999'}) do |anemone|  
  anemone.on_every_page do |page| 
    puts page.url 
  end 
end