Re: Proposal: more general unionWith for Data.Map

On 1/24/12 2:52 PM, Johan Tibell wrote:

On Tue, Jan 24, 2012 at 11:42 AM, Christian Sattler wrote:

...

I don't care much about the naming, but note that the analogous property already fails for the generalized intersectionWithKey in the development version.

I suspected as much. I think the current intersectionWithKey is broken. We should have a single function, mergeWithKey, that allows people to do the things they currently do using Maybe return values in e.g. intersectionWithKey.

I'd just like to point out that bytestring-trie has some prior art using the name "merge"[1]. AKA, +1 for that name and variants thereof. [1] http://hackage.haskell.org/packages/archive/bytestring-trie/0.2.3/doc/html/D... -- Live well, ~wren