30 Nov
2012
30 Nov
'12
9:39 p.m.
On Fri, Nov 30, 2012 at 6:48 PM, Henning Thielemann < lemming@henning-thielemann.de> wrote:
On Fri, 30 Nov 2012, Edward Kmett wrote:
You can add lens to the list of packages that had to define their own
(for doctest purposes). ;)
I grepped for isLeft and isRight in lens-3.6 but did not find them.
It is used in Projection tests in the as yet unreleased 3.7 on github. src/Control/Lens/Projection.hs:-- >>> let isLeft (Left _) = True; isLeft _ = False -Edward