core_ext.rb

# frozen_string_literal: true
class Object
  def self.yaml_tag url
    Psych.add_tag(url, self)
  end

  ###
  # call-seq: to_yaml(options = {})
  #
  # Convert an object to YAML.  See Psych.dump for more information on the
  # available +options+.
  def to_yaml options = {}
    Psych.dump self, options
  end
end

if defined?(::IRB)
  require 'psych/y'
end