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

collect!

        # Set.collect!

(from ruby core)
---
    collect!() { |o| ... }

---

Replaces the elements with ones returned by `collect()`.
Returns an enumerator if no block is given.



      

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.