| 421 |      1 | import M1._
 | 
|  |      2 | 
 | 
|  |      3 | assert(get_prices(List("BIDU"), 2004 to 2008) ==
 | 
| 388 
Christian Urban <christian.urban@kcl.ac.uk> parents: diff
changeset |      4 |    List(List(None), List(None), List(Some(6.35)), 
 | 
| 
Christian Urban <christian.urban@kcl.ac.uk> parents: diff
changeset |      5 |         List(Some(12.241)), List(Some(38.188))))
 | 
| 
Christian Urban <christian.urban@kcl.ac.uk> parents: diff
changeset |      6 | 
 | 
| 
Christian Urban <christian.urban@kcl.ac.uk> parents: diff
changeset |      7 | 
 | 
| 421 |      8 | assert(get_prices(List("GOOG", "AAPL"), 2010 to 2012) ==
 | 
| 388 
Christian Urban <christian.urban@kcl.ac.uk> parents: diff
changeset |      9 |    List(List(Some(312.204773), Some(26.782711)), 
 | 
| 
Christian Urban <christian.urban@kcl.ac.uk> parents: diff
changeset |     10 |         List(Some(301.0466), Some(41.244694)), 
 | 
| 
Christian Urban <christian.urban@kcl.ac.uk> parents: diff
changeset |     11 |         List(Some(331.462585), Some(51.464207))))
 |