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

flatten

        # Set.flatten

(from ruby core)
---
    flatten()

---

Returns a new set that is a copy of the set, flattening each
containing set recursively.



      

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.