title: Converting a large list into a data.frame
body: <p>I am trying to convert a list of 13,000 elements, each element being a <code>zoo</code> object with nr = 230 and ncol = 4, to a dataframe.</p>
  
  <p>I have tried <code>setattr(mylist, 'class', 'data.frame')</code>, but it resulted in a huge vector of NAs.
  I have also tried the <code>quickdf(mylist)</code> function from the <code>plyr</code> package, but that didn't work either.</p>
  
  <p>The <code>do.call(rbind.data.frame, mylist)</code>type methods are very slow, thus not an option in this case.</p>
  
  <p>Any suggestion as to the most efficient method to convert such a list to a dataframe?</p>