This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# OptionParser.permute! (from ruby core) --- permute!(argv = default_argv, into: nil) --- Same as #permute, but removes switches destructively. Non-option arguments remain in `argv`.
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.