diff -r 34feeb53c0ba -r 0315d9983cd0 main_marking2/danube_test5.scala
--- a/main_marking2/danube_test5.scala	Sun Jan 15 10:58:13 2023 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,29 +0,0 @@
-
-// first test 
-
-import M2._
-
-def urban_groupById(ratings: List[(String, String)]) = 
-  ratings.groupBy(_._1).view.mapValues(_.map(_._2)).toMap 
-
-def urban_get_csv_file(name: String) : List[String] = {
-  import io.Source
-  import scala.util._
-  val csv = Source.fromFile(name)
-  csv.mkString.split("\n").toList.drop(1)
-}
-
-def urban_process_ratings(lines: List[String]) : List[(String, String)] = {
-  for (cols <- lines.map(_.split(",").toList); 
-       if (cols(2).toFloat >= 4)) yield (cols(0), cols(1))  
-}
-
-
-val urban_good_ratings = process_ratings(urban_get_csv_file("ratings.csv"))
-
-val urban_ratings_map = urban_groupById(urban_good_ratings)
-
-assert(suggestions(urban_ratings_map, "912").length  == 4110)
-assert(suggestions(urban_ratings_map, "858").length  == 4883)
-assert(suggestions(urban_ratings_map, "260").length  == 4970)
-