This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Set.intersection (from ruby core) --- intersection(enum) --- (This method is an alias for Set#&.) Returns a new set containing elements common to the set and the given enumerable object. Set[1, 3, 5] & Set[3, 2, 1] #=> #<Set: {3, 1}> Set['a', 'b', 'z'] & ['a', 'b', 'c'] #=> #<Set: {"a", "b"}>
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.