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

first?

        # PrettyPrint::SingleLine.first?

(from ruby core)
### Implementation from SingleLine
---
    first?()

---

This is used as a predicate, and ought to be called first.



      

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.