han can invoke the passed block with a new context.
For instance:</p>

<pre><code>{{#each a}}
    {{value}} is a prime number.
{{/each}}
</code></pre>

<p>and the following context:</p>

<pre><code>{a : [ {value: 1}, {value: 3}, {value: 5}, {value: 7} ]} as
</code></pre>

<p>will render as:</p>

<pre><code>1 is a prime number. 3 is a prime number. 5 is a prime number. 7 is a prime number.
</code></pre>

<p>In this case, the &ldquo;each&rdquo; helper will iterate over the array parameter and will call the pa