title: Grouping a list into lists of n elements in Haskell
body: <p>Is there an operation on lists in library that makes groups of n elements? For example: n=3</p>
  
  <pre><code>groupInto 3 [1,2,3,4,5,6,7,8,9] = [[1,2,3],[4,5,6],[7,8,9]]
  </code></pre>
  
  <p>If not, how do I do it?</p>