Deprecate Foldable for Either

Tony Morris tonymorris at
Mon Mar 20 02:38:15 UTC 2017

The length of ((,) a) has been 1 since a very long time before GHC 7.10.

I even remember writing the code, which is not a common thing, which in
general, turned into a project with hundreds of contributors. That
should end any appeal to popularity!

On 20/03/17 13:34, amindfv at wrote:
>> El 19 mar 2017, a las 21:28, Artyom Kazak <yom at> escribió:
>> [...] Whether those intuitions come from math, or from C, or from English, 
> (or from versions of Haskell before ghc 7.10)

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