Fixes misleading contramap example #1128
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The current version in the documentation old works because the values are incorrectly transposed and are of the same type. This update calls out that the case class needs to be ordered the same way for the proper Iso instance to be derived. It seems like exposing something along of the lines of Hlist's `rotate` functions might be useful.
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The current version in the documentation only works because the values are incorrectly transposed and are of the same type. This update calls out that the case class needs to be ordered the same way for the proper Iso instance to be derived.
It seems like exposing something along of the lines of Hlist's
rotatefunctions might be useful.