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

sunday? 

        # Time.sunday?

(from ruby core)
---
    time.sunday? -> true or false

---

Returns `true` if *time* represents Sunday.

    t = Time.local(1990, 4, 1)       #=> 1990-04-01 00:00:00 -0600
    t.sunday?                        #=> true

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.