title: Split list of strings into list of lists of strings
body: <p>I have a list of strings. I want to split each of the strings on space, e.g. using <code>words</code>, resulting in a list of lists of strings. Unfortunately I can't use <code>map words myList</code> because map expects [a] -> [b], whereas I want [a] -> [[b]]. How would I go about this?</p>
  
  <p>The other option off the top of my head is a recursive function where I split off the head string from my original list, <code>words</code> it and then analyse the result there and then, but I was trying to do it with pre-existing functions and a one-liner.</p>