Random String example for http://uhhuhyeah.com/distractions/random-strings-in-ruby

random_coatable.rb

def create_token
  characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890'
  token = ''
  4.times do
    pos = rand(characters.length)
    token += characters[pos..pos]
  end
  token
end