title: Creating a 2D array with specific length and width
body: <p>*see the title. I basically need it to create a blank array that can be any dimension like 40x60. Basically maybe something like <code>makeArray(3, 4)</code> makes an array like:</p>
  
  <pre><code>[][][]
  [][][]
  [][][]
  [][][]
  </code></pre>