app.rb

require 'ffi'
require 'mylibrary'


def new_message
        builder = MallocMessageBuilder.new
        builder.init_root(self)
      end


MyLibrary.printAddressBook("data.bin");
MyLibrary.writeAddressBook(MallocMessageBuilder("data.bin"));
#direct body of printAddressBook

MyLibrary.getRoot

#MyLibrary.read();

myapp.rb:12: undefined method `MallocMessageBuilder' for main:Object (NoMethodError)