+
−
/*+
−
assert(CW6c.get_prices(List("BIDU"), 2004 to 2008) == List(List(None), List(None), +
−
                                                      List(Some(6.35)), List(Some(12.241)), +
−
                                                      List(Some(38.188))))+
−
+
−
*/+
−
assert(CW6c.get_prices(List("GOOG", "AAPL"), 2010 to 2012) ==+
−
    List(List(Some(311.349976), Some(27.505054)), +
−
         List(Some(300.222351), Some(42.357094)), +
−
         List(Some(330.555054), Some(52.852215))))+
−
+
−
+
−
+
−