title: Specify col_type by name in lapply
body: <p>I am reading in multiple files into R from Excel using <code>lapply</code>. I have just noticed that some of my files are having the <code>data</code> column being read in as a <code>logical</code> and not <code>numeric</code>. </p>
  
  <p>I would like to use the <code>col_types</code> argument of <code>read_xls</code>, but my files have different numbers of columns so would like to call them by name. </p>
  
  <p>Any idea how I can do this?
  This is how I am importing the data at the moment:</p>
  
  <pre><code>file_list=list.files(file_location, pattern="^ID.*xls",full.names = T) 
  import=lapply(file_list, function(x) read_xls(x, col_names = T))
  </code></pre>