This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# StringIO.external_encoding (from ruby core) --- strio.external_encoding => encoding --- Returns the Encoding object that represents the encoding of the file. If the stream is write mode and no encoding is specified, returns `nil`.
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.