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

to_s 

        # Time.to_s

(from ruby core)
---
    time.to_s    -> string

---

Returns a string representing *time*. Equivalent to calling #strftime
with the appropriate format string.

    t = Time.now
    t.to_s                              #=> "2012-11-10 18:16:12 +0100"
    t.strftime "%Y-%m-%d %H:%M:%S %z"   #=> "2012-11-10 18:16:12 +0100"

    t.utc.to_s                          #=> "2012-11-10 17:16:12 UTC"
    t.strftime "%Y-%m-%d %H:%M:%S UTC"  #=> "2012-11-10 17:16:12 UTC"

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.