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• Flat.scala

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kyo.Flat.scala Maven / Gradle / Ivy

package kyo

import scala.reflect.ClassTag
import internal.FlatImplicits

sealed trait Flat[-T]

object Flat extends FlatImplicits {

  sealed trait Checked[T]   extends Flat[T]
  sealed trait Unchecked[T] extends Flat[T]

  private val cachedChecked   = new Checked[Any] {}
  private val cachedUnchecked = new Unchecked[Any] {}

  implicit def unit[S]: Flat[Unit > S] = unsafe.checked[Unit > S]

  object unsafe {
    def checked[T]: Checked[T] =
      cachedChecked.asInstanceOf[Checked[T]]
    implicit def unchecked[T]: Unchecked[T] =
      cachedUnchecked.asInstanceOf[Unchecked[T]]
  }
}