title: Call parent class' initialize function?
body: <p>I have little experience with Ruby, and I come from C++, where initializer lists are commonly used. One thing about Ruby that I would like to know is the following: </p>
  
  <p>Given the following class Vehicle and its subclass Car:</p>
  
  <pre><code>class Vehicle
   attr_reader :wheels
   def initialize(wheels)
    @wheels = wheels 
   end
  end 
  
  class Car &lt; Vehicle
   def initialize(car_stuff)
    @wheels = 4 # this is the part I don't like! ;)
    @car_stuff = car_stuff
   end 
  end
  </code></pre>
  
  <p><strong>Is there a way of calling the superclass constructor method</strong> instead of going through the different variables that class <code>Vehicle</code> may have?</p>
  
  <p>Thank you in advance. </p>