This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# StringScanner.check_until (from ruby core) --- check_until(pattern) --- This returns the value that #scan_until would return, without advancing the scan pointer. The match register is affected, though. s = StringScanner.new("Fri Dec 12 1975 14:39") s.check_until /12/ # -> "Fri Dec 12" s.pos # -> 0 s.matched # -> 12 Mnemonic: it "checks" to see whether a #scan_until will return a value.
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.