title: head problem: just two non adjacent columns please
body: <p>So I was trying to look at a few columns and did head(mydf[76:82], n=20), which got me columns 76:82, for 20 rows. Excellent. Just what I wanted.</p>
  <p>Next, however, I want to get just columns 76 &amp; 82. I tried the following:</p>
  <pre><code>head(tu_timeadd[76&amp;82]) #which just gave me the whole dataframe
  head(tu_timeadd[76,82]) #which I'm pretty sure gave me the value for column 76, row 82?
  head(tu_timeadd[76 |82]) #which gave me the whole thing again
  </code></pre>
  <p>anyway to just spit out the first few rows of columns 76 &amp; 82 without having to subset it out?</p>