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package scala
import annotation.implicitNotFound
/** A marker trait indicating that values of type `L` can be compared to values of type `R`. */
@implicitNotFound("Values of types ${L} and ${R} cannot be compared with == or !=")
sealed trait Eq[-L, -R]
/** Besides being a companion object, this object
* can also be used as a value that's compatible with
* any instance of `Eq`.
*/
object Eq extends Eq[Any, Any]
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