This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# RangeError < StandardError (from ruby core) --- Raised when a given numerical value is out of range. [1, 2, 3].drop(1 << 100) *raises the exception:* RangeError: bignum too big to convert into `long' ---
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.