Re: Proposal: Add a few extra members to Foldable and Traversable classes

Keep in mind as part of the "burning bridges proposal that caused us to form the core libraries committee in the first place the Foldable/Traversable definitions replace the Prelude ones. There is no new conflict against Prelude. Sent from my iPhone

On Sep 19, 2014, at 5:05 PM, Henning Thielemann wrote:

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On Fri, 19 Sep 2014, David Feuer wrote:

Joachim, you may be right about sum and product; I really don't know. Henning: this doesn't change the Data.Foldable API at all. Data.Foldable already exports all of these functions, and the class would give each of them a valid default implementation.

For consumers of the functions it would not change much. However, user instances with custom implementations of the new methods cannot be used with older Prelude versions anymore. _______________________________________________ Libraries mailing list Libraries@haskell.org http://www.haskell.org/mailman/listinfo/libraries