index operator in handlebars say Unexpected token ,

I have #each loop in my ember app and want to know index of loop, so I try to using {{@index}} like this :

<script type="text/x-handlebars" data-template-name="column">
<ul>
{{#each item in controller}}
{{@index}}
{{item-rows currentItem=item}}
{{/each}}
</ul>
</script>

But in chrome, I get this error:

Uncaught SyntaxError: Unexpected token , handlebars.js:1457

My ember.js version is rc8 and handlebars is 1. I need a solution to find index of #each.

Answer

You can get the contentIndex from itemViewClass of the #each helper

{{#each itemViewClass="Em.View"}}
   <h3 class="row">{{name}} - <small>{{view.contentIndex}}</small></h3>    
{{/each}}

DEMO FIDDLE