4 ms·

The even more sensible thing is to take an optional argument: a function that is passed the conflicting keys and their values, and must resolve the conflict. If

The even more sensible thing is to take an optional argument: a function that is passed the conflicting keys and their values, and must resolve the conflict. If `None` is passed, then a documented default is taken.

pacala 8y ago
It’s an operator, there are no optional arguments. Though it’s OK to also have a function like you propose.
- gpderetta 8y ago
  Recursively calling the operator is an option.