This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Fiber.alive? (from ruby core) --- fiber.alive? -> true or false --- Returns true if the fiber can still be resumed (or transferred to). After finishing execution of the fiber block this method will always return `false`.
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.