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

inspect 

        # Date.inspect

(from ruby core)
---
    d.inspect  ->  string

---

Returns the value as a string for inspection.

    Date.new(2001,2,3).inspect
              #=> "#<Date: 2001-02-03>"
    DateTime.new(2001,2,3,4,5,6,'-7').inspect
              #=> "#<DateTime: 2001-02-03T04:05:06-07:00>"

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.