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Add Compose and Bicompose? #900

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adelbertc opened this issue Feb 25, 2016 · 2 comments
Closed

Add Compose and Bicompose? #900

adelbertc opened this issue Feb 25, 2016 · 2 comments

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@adelbertc
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final case class Compose[F[_], G[_], A](value: F[G[A]]) extends AnyVal

Defining instances on Compose instead of having things like Functor#compose which requires

  1. Getting an instance by doing something like implicit val instance = Functor[Option].compose[List]
  2. Explicitly needing to pass in the instance, otherwise scalac will resolve to just the outer one
@adelbertc adelbertc mentioned this issue Apr 4, 2016
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@adelbertc
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(This would also make it consistent with how we treat product composition via Prod)

@adelbertc
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Closing in favor of #968

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@adelbertc