title: dust.js if statement with size and eq as condition
body: <p>Anyone know ihow i can use an @size and a @eq together an @if condition?</p>
  
  <pre><code>{@size key=items /}
  </code></pre>
  
  <p>i want to say something to that effect:</p>
  
  <p>{@if cond={@size key=items /} of {@eq key=items value= B } = 10} ...do this {:else} do that</p>
  
  <p>which means look through my data, count how many items:B there are, if there are more than 1 do this or if it is 0 do that </p>