title: Call one function from another
body: <p>I have a custom function according to <a href="http://docs.ractivejs.org/latest/expressions" rel="nofollow">documentation</a>. What documentation doesn't cover (or I'm blind) is how to call one function from another. Here is what I tried:</p>
  
  <pre><code>var myRactive = new Ractive({
      el: '#element',
      template: '#template',
      data: {
          function1: function() {
              return 100;
          },
          function2: function() {
              return function1() / 2;
          }
      }
  });
  </code></pre>
  
  <p>It doesn't work. I tried to change it to <code>myRactive.function1()</code>, <code>myRactive.data.function1()</code>, etc. but neither of them worked out.</p>