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

hour 

        # DateTime.hour

(from ruby core)
---
    d.hour  ->  fixnum

---

Returns the hour (0-23).

    DateTime.new(2001,2,3,4,5,6).hour         #=> 4

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.