class Hash

  # Return a new hash with all keys converted to symbols.
  def symbolize_keys
    inject({}) do |options, (key, value)|
      options[(key.to_sym rescue key) || key] = value
      options
    end
  end

  # Destructively convert all keys to symbols.
  def symbolize_keys!
    self.replace(self.symbolize_keys)
  end

end