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

year 

        # Date.year

(from ruby core)
---
    d.year  ->  integer

---

Returns the year.

    Date.new(2001,2,3).year           #=> 2001
    (Date.new(1,1,1) - 1).year        #=> 0

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.