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import scala.reflect.macros.Context
import language.experimental.macros
case class C[T](t: String)
object C {
implicit def foo[T]: C[T] = macro Macros.impl[T]
}
object Macros {
def impl[T: c.WeakTypeTag](c: Context) = {
import c.universe._
reify(C[T](c.literal(weakTypeOf[T].toString).splice))
}
}
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