This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Thread.group (from ruby core) --- thr.group -> thgrp or nil --- Returns the ThreadGroup which contains the given thread. Thread.main.group #=> #<ThreadGroup:0x4029d914>
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.