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

autoclose= 

        # IO.autoclose=

(from ruby core)
---
    io.autoclose = bool    -> true or false

---

Sets auto-close flag.

    f = open("/dev/null")
    IO.for_fd(f.fileno)
    # ...
    f.gets # may cause Errno::EBADF

    f = open("/dev/null")
    IO.for_fd(f.fileno).autoclose = false
    # ...
    f.gets # won't cause Errno::EBADF

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.