title: irb returning NameError: uninitialized constant Date
body: <p>ruby-v2.2.3 is supposed to have Date class preloaded into irb, however when I enter...</p>
  
  <blockquote>
    <p>Date
    NameError: uninitialized constant Date
           from (irb):1
           from /Users/noah/.rubies/ruby-2.2.3/bin/irb:11:in `'</p>
  </blockquote>
  
  <p>Why should I have to <code>require Date</code> every single time if it's supposed to be preloaded into 2.2.3?</p>