Scala line-by-line UTF-8 file reader

import scala.io.Source
import scala.util.Using

def foreachLine(path: java.nio.file.Path)(f: String => Unit): Long =
  Using.resource(Source.fromFile(path.toFile, "UTF-8")) { source =>
    source.getLines().foldLeft(0L) { (count, line) =>
      f(line)
      count + 1
    }
  }

def firstLines(path: java.nio.file.Path, n: Int): Vector[String] =
  Using.resource(Source.fromFile(path.toFile, "UTF-8"))(_.getLines().take(n).toVector)