package cleanframes.instances
import cleanframes.Cleaner
import org.apache.spark.sql.functions.udf
import scala.reflect.runtime.universe.TypeTag
trait HigherOrderKind {
implicit def stringHigherOrder[A, B[_]](implicit
aTag: TypeTag[A],
bTag: TypeTag[B[A]],
func: String => B[A]): Cleaner[B[A]] =
Cleaner.materialize { (frame, name, alias) =>
List(
udf(func).apply(frame.col(name.get)) as alias.get
)
}
}