title: Slicing after an index
body: <p>I have a data table in R and want to take all rows after a certain index.  For a minimal example, I tried </p>
  
  <pre><code>x &lt;- c(1,2,3)
  x[2:]
  </code></pre>
  
  <p>which is the correct syntax in Python but gives an error in R.  I know I could do </p>
  
  <pre><code>x[2:length(x)]
  </code></pre>
  
  <p>but that somehow strikes me as verbose.  Is that the best way to do it?</p>