Proposal: pare down traversable
david.feuer at gmail.com
Sat Sep 26 21:05:37 UTC 2015
Traversable currently has traverse, sequenceA, sequence, and mapM methods.
sequence and mapM seem to be dinosaurs now. I'd like to suggest that
sequenceA be turned into a deprecated function and mapM be moved from
Control.Monad to Data.Traversable and re-exported from Control.Monad.
I expect most instance declarations to survive unchanged. The only CPP pain
point will be that instances that define sequenceA will have to define
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