title: How can you conditionally remove entire columns from a two dimensional array in Ruby?
body: <p>I have several large csv files with thousands of columns that I need to import and then remove entire columns based contents of the column.  Is there an easy way to handle this in Ruby?</p>
  
  <p>I could transpose the data and then just delete rows but I was wondering if there was a more syntactically sugary way of doing it. </p>