This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.

each_pair 

        # OpenStruct.each_pair

(from ruby core)
---
    ostruct.each_pair {|name, value| block }  -> ostruct
    ostruct.each_pair                         -> Enumerator

---

Yields all attributes (as symbols) along with the corresponding values
or returns an enumerator if no block is given.

    require "ostruct"
    data = OpenStruct.new("country" => "Australia", :capital => "Canberra")
    data.each_pair.to_a   # => [[:country, "Australia"], [:capital, "Canberra"]]

This is MURDOC! A Ruby documentation browser inspired by Smalltalk-80. It allows you to learn about Ruby by browsing through its class hierarchies, and see any of its methods.