This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Hash.rehash (from ruby core) --- hash.rehash -> self --- Rebuilds the hash table by recomputing the hash index for each key; returns `self`. The hash table becomes invalid if the hash value of a key has changed after the entry was created. See [Modifying an Active Hash Key](#class-Hash-label-Modifying+an+Active+Hash+Key).
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.