I'm trying to read bytes from a file, and it would be handy if there was
a method that threw an exception if I couldn't read that many bytes, or
encountered an EOF.

IO#readbytes seems like the perfect method, but I have an instance of File.
The documentation says that File inherits from IO, but the File instance
doesn't seem to have the readbytes method.  Am I missing something?

--Aaron

-- 
Aaron Patterson
http://tenderlovemaking.com/