title: R self reference
body: <p>In R I find myself doing something like this a lot:</p>
  
  <blockquote>
    <p><code>adataframe[adataframe$col==something]&lt;-adataframe[adataframe$col==something)]+1</code></p>
  </blockquote>
  
  <p>This way is kind of long and tedious. Is there some way for me<br>
  to reference the object I am trying to change such as </p>
  
  <pre><code>adataframe[adataframe$col==something]&lt;-$self+1 
  </code></pre>
  
  <p>?</p>