class IO #:nodoc:
  class << self
    unless method_defined? :binread
      def binread(file, *args)
        raise ArgumentError, "wrong number of arguments (#{1 + args.size} for 1..3)" unless args.size < 3
        File.open(file, "rb") do |f|
          f.read(*args)
        end
      end
    end
  end
end