hash_extensions.rb

class Hash

  # Return a new hash with all keys converted to camelcase
  def camelize_keys
    dup.camelize_keys!
  end

  # Destructively convert all keys to camelcase
  def camelize_keys!
    keys.each do |key|
      self[key.to_s.camelize(:lower)] = delete(key)
    end
    self
  end
end