traverseWithKey for Data.Map et. al.

roconnor at roconnor at
Sun Nov 3 18:13:52 UTC 2013

On Sun, 3 Nov 2013, roconnor at wrote:

> Has there yet been a proposal for adding
> traverseWithKey :: Applicative f => (k -> a -> f b) -> Map k a -> f (Map k b)
> to Data.Map and friends yet?
> If not I'll draw up a proposal.

Oops, it has been drawn to my attention that this function already exists. 
I was looking at very outdated docs.  Sorry.

Russell O'Connor                                      <>
``All talk about `theft,''' the general counsel of the American Graphophone
Company wrote, ``is the merest claptrap, for there exists no property in
ideas musical, literary or artistic, except as defined by statute.''

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