I have a list of lists of pairs of numeric Strings (like this: [["2","3"],["1","2"],["13","14"]] etc.) I'd like to change it into a list of a list of numbers, but I'm not sure how to go about it. If it was just one list, I could use map, but 
map.map doesn&#39;t seem to work. Any suggestions, or pointers to a reference online?<br><br>thanks in advance,<br clear="all"><br>-- <br>chuk