title: Equivalent of Excel Left function using dplyr
body: <p>I have a variable with integers as such as :</p>
  
  <pre><code>     Occupation
       1111
       2112
       3117
  </code></pre>
  
  <p>I'm trying to mutate and create a variable like, pretty much a left function on excel, however I'm trying to use dplyr, and I would like to return the integers not a chr.</p>
  
  <pre><code>     Occupation
       111
       211
       311
  </code></pre>