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

<=

        # Set.<=

(from ruby core)
---
    <=(set)

---

(This method is an alias for Set#subset?.)

Returns true if the set is a subset of the given set.



      

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.