This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# String.upcase (from ruby core) --- upcase(*options) -> string --- Returns a string containing the upcased characters in `self`: s = 'Hello World!' # => "Hello World!" s.upcase # => "HELLO WORLD!" The casing may be affected by the given `options`; see [Case Mapping](doc/case_mapping_rdoc.html). Related: String#upcase!, String#downcase, String#downcase!.
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.