Proposal #2769: Export mapAccumR from Data.Map, Data.IntMap

Matti Niemenmaa matti.niemenmaa+news at
Tue Nov 11 16:14:25 EST 2008

Ticket URL:
Discussion period: 1 week

The `mapAccumR` function has been written in both the Data.Map and IntMap
sources but it's commented out and not exported. This seems to be an error and I
propose that it be simply uncommented.

The issue can be worked around by using Data.List.mapAccumL on the descending
list representation of the Map, but that's hardly optimal.

Seems like a no-brainer to me, hence the short discussion period.

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