RCR 214: Object#pretty

make pretty_printing more available and easier to use

• not helpful:

  raise ArgumentError, very_large_hash.inspect

• cumbersome:

  s = '' PP::pp very_large_hash, s raise ArgumentError, s

creation of Object#pretty method which is analogous to Object#inspect, only returning result of 'pp' instead of the result from 'p'

simply add a method

class Object

  def pretty s = ''
    autoload :PP, 'pp'
    PP::pp self, s
    s
  end

end