title: How do I combine two lists in Dart?
body: <p>I was wondering if there was an easy way to concatenate two lists in dart to create a brand new list object. I couldn't find anything and something like this:</p>
  <p>My list:</p>
  <pre><code>list1 = [1, 2, 3]
  list2 = [4, 5, 6]
  </code></pre>
  <p>I tried:</p>
  <pre><code>var newList = list1 + list2;
  </code></pre>
  <p>I wanted the combined output of:</p>
  <pre><code>[1, 2, 3, 4, 5, 6]
  </code></pre>