Kameshwaran

# simple camelize in ruby

class String
  def camelize
    split("_").map(&:capitalize).join
  end
end


# "kamesh_test" => "KameshTest"

Kameshwaran

class ActiveRecord::Base
  class << self
    def random
      all.at(rand(count))
    end
  end
end

# User.random => #<User id: 10, ...>
# User.random => #<User id: 59, ...>

Kameshwaran

def search(hash, keyword)
  if (hash.respond_to?(:keys) && hash.keys.include?(keyword))
      hash[keyword]
  elsif hash.respond_to?(:find)
    result = nil
    hash.values.find { |value| result = search(value, keyword) }
    result
  end
end