#1695
I solved this issue now. I found that CollectParameterValues was too monolithic in that you have to overwrite and re-implement the same method again if you wanted to change just a detail (in that case that operators are stored by their name). So I split CollectParameterValues into two separate logical parts:
- CollectParameterValues is iterating over the parameters
- GetCollectedValues decides what values are collected from the given parameter value
Algorithm and Problem now overwrite only GetCollectedValues, but reuse the implementation of the base class in that they only filter the values. When they see an IOperator they will instead convert it to its name. Using IEnumerable and yield I think that's a nice solution.
