hacking-rubys-syntax#0

test.rb

# this is the first way to do it
class Test
  def say_hello
    puts "I'm a private method"
  end
  private :say_hello
end
 
# and this is the second way
class Test
  #other methods this class might have
  private
  def say_hello
    puts "I'm a private method"
  end
end