jonbca

class Array
  def peach(&block)
    threads = []
    self.each do |item|
      threads << Thread.new do
        block.call(item)
      end
    end
    threads.each(&:join)
  end

jonbca

<table {{bindAttr class="length:show:hide"}}>
<thead><tr><th>foo</th></tr></thead>
<tbody>
{{#each item in controller}}
  <tr><td>{{item.name}}</td></tr>
{{/each}}
</tbody>
</table>

<div {{bindAttr class="length:hide:show"}}>