Replace RowOperation.initialValue() and rowAggregator() by collect(Collector)

[Douglas Surber]

Go for it.

If one method returns a different object then the order of the methods becomes significant there is a possibly dramatic increase in the number of types.

Douglas

> On Oct 28, 2017, at 9:53 AM, Lukas Eder <lukas.eder at gmail.com> wrote:
> 
> I do think this area is worth re-designing. I'm sure there's a simple, reasonable solution that works more like the Stream API: Without type witnesses, profiting from the existing inference capabilities.