Created
March 14, 2019 20:39
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| import $ivy.`org.typelevel::cats-core:1.6.0` | |
| import cats.~> | |
| trait HFunctor[F[_[_], _]] { | |
| def hmap[I[_], J[_]](nt: I ~> J): F[I, ?] ~> F[J, ?] | |
| } |
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