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

delete?

        # Set.delete?

(from ruby core)
---
    delete?(o)

---

Deletes the given object from the set and returns self. If the
object is not in the set, returns nil.



      

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.