This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# ClosedQueueError < rb_eStopIteration (from ruby core) --- The exception class which will be raised when pushing into a closed Queue. See Thread::Queue#close and Thread::SizedQueue#close. ---
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.