title: get column from list of dataframes R
body: <p>I am an R beginner and I am stuck on this problem. I had a dataframe and by using the split() function I have created a list of dataframes, e.g:</p>
  
  <pre><code>dfList &lt;- split(mtcars, mtcars$cyl)
  </code></pre>
  
  <p>Now I want to retrieve a column of a specific dataframe, e.g. column 2 from  dataframe 1, so something like </p>
  
  <pre><code>dfList[1][2]
  </code></pre>
  
  <p>What I can do right now is create <code>for</code> loops to get inside the data structure. But I can't find a oneliner to do it, if it exists. How can I do that? Thanks in advance!</p>