This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# String.tr_s! (from ruby core) --- str.tr_s!(from_str, to_str) -> str or nil --- Performs String#tr_s processing on *str* in place, returning *str*, or `nil` if no changes were made.
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.