added fromList method, but crashed compiler?!

1 files changed, 10 insertions, 1 deletions

diff --git a/sources/scala/collection/immutable/ListMap.scala b/sources/scala/collection/immutable/ListMap.scala
index 468010d877..102cdac66f 100644
--- a/sources/scala/collection/immutable/ListMap.scala
+++ b/sources/scala/collection/immutable/ListMap.scala
@@ -11,7 +11,14 @@ package scala.collection.immutable;
 
 
 object ListMap {
-    def Empty[A, B] = new ListMap[A, B];
+  def Empty[A, B] = new ListMap[A, B];
+
+  /** bug: crashes analzyer with NullPointerException */
+  /*
+  def fromList[A,B]( list:List[Pair[A,B]] ):ListMap[A,B] =
+    list.foldLeft (Empty[A,B]) { ( x:ListMap[A,B],y:Pair[A,B] ) =>
+                                  x.update( y._1, y._2 ) };
+  */
 }
 
 /** This class implements immutable maps using a list-based data
@@ -73,3 +80,5 @@ class ListMap[A, B] with Map[A, B, ListMap[A, B]] {
             (key.hashCode() ^ value.hashCode()) + ListMap.this.hashCode();
     }
 }
+
+