This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.

error?

        # Ripper.error?

(from ruby core)
---
    ripper.error?   -> Boolean

---

Return true if parsed source has errors.



      

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.