I would be in favor of adding the new function and against changing the type signature of the existing one. The breakage from changing it would just be too great. -Andrew Martin On Mon, Mar 6, 2017 at 3:39 AM, Henning Thielemann < lemming@henning-thielemann.de> wrote:
On Sun, 5 Mar 2017, Vladislav Zavialov wrote:
Since 'Data.List.NonEmpty' is now in 'base', it makes sense to change
the type of 'some' from
some :: Alternative f => f a -> f [a]
to
some :: Alternative f => f a -> f (NonEmpty a)
as it's guaranteed to return a non-empty list.
A less invasive way would be to add a new function with that type.
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