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chenharryhua/enumEq.scala

Created July 18, 2020 05:23
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enumEq.scala
implicit def eqEnum[E <: Enumeration](implicit ev: shapeless.Witness.Aux[E]): Eq[E#Value] =
(x: E#Value, y: E#Value) => ev.value(x.id) == ev.value(y.id)
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