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

error?

        # Logger.error?

(from ruby core)
---
    error?()

---

Returns `true` if and only if the current severity level allows for the
printing of `ERROR` messages.



      

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.