sealed trait LowPriority extends Serializable
Evidence that no implicit instance of the same type as the one being currently searched is available elsewhere.
Added to an implicit def like
implicit def genericThing[F, G] (implicit ev: LowPriority, gen: Generic.Aux[F, G], underlying: Thing[G] ): Thing[F] = ???
it prevents genericThing
to provide an instance of Thing[F]
if an implicit one is already
available elsewhere. This effectively gives genericThing
a lower priority than the already
existing implicits - without having to deal with cumbersome priority scoping.
Linear Supertypes
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