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

names 

        # Regexp.names

(from ruby core)
---
    rxp.names   -> [name1, name2, ...]

---

Returns a list of names of captures as an array of strings.

    /(?<foo>.)(?<bar>.)(?<baz>.)/.names
    #=> ["foo", "bar", "baz"]

    /(?<foo>.)(?<foo>.)/.names
    #=> ["foo"]

    /(.)(.)/.names
    #=> []

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.