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to_set 

        # Set.to_set

(from ruby core)
---
    to_set(klass = Set, *args, &block)

---

Returns self if no arguments are given. Otherwise, converts the
set to another with `klass.new(self, *args, &block)`.
In subclasses, returns `klass.new(self, *args, &block)` unless
overridden.

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.