w3rs/reducers — comment on commit 7e34ce664564c2696b261bdf4f0dfe9af3750434
File:  line 0
By ekmett:

To your point, in retrospect the choice of generator that I made for Map was a bad idea and inconsistent with my use for other containers. I'm thinking it would be better for me to just change that instance to map over the values by default and make some kind of KeyValue newtype to see the keys and values together (if anything).