Nyall Dawson f247a7cda3 Add c++ optimised uniqueValues method which respects processing context
Remove processing vector.uniqueValues/vector.getUniqueValues
and port usage to c++ method

Should be much faster than the python method, as the c++ method takes
advantage of handing off the unique values calculation to the
provider source whenever possible
2017-04-26 12:53:35 +10:00
..
2017-04-26 12:53:35 +10:00
2016-09-21 23:30:04 +02:00
2017-01-30 10:28:37 +01:00