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djspiewak/foldDistributesOverSequence.scala

Created January 26, 2020 17:34
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foldDistributesOverSequence.scala
def foldDistributesOverSequence[A: Monoid](fga: F[G[A]]) = {
implicit val mga: Monoid[G[A]] = Applicative.monoid[G, A]
fga.fold <-> fga.sequence.map(_.fold)
}
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