This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Proc.<< (from ruby core) --- prc << g -> a_proc --- Returns a proc that is the composition of this proc and the given *g*. The returned proc takes a variable number of arguments, calls *g* with them then calls this proc with the result. f = proc {|x| x * x } g = proc {|x| x + x } p (f << g).call(2) #=> 16 See Proc#>> for detailed explanations.
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.