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

hex 

        # String.hex

(from ruby core)
---
    str.hex   -> integer

---

Treats leading characters from *str* as a string of hexadecimal digits
(with an optional sign and an optional `0x`) and returns the
corresponding number. Zero is returned on error.

    "0x0a".hex     #=> 10
    "-1234".hex    #=> -4660
    "0".hex        #=> 0
    "wombat".hex   #=> 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.