1 files changed, 4 insertions, 20 deletions
diff --git a/gee/readonlylist.vala b/gee/readonlylist.vala
index 58d5e9a..8be3f27 100644
--- a/gee/readonlylist.vala
+++ b/gee/readonlylist.vala
@@ -86,10 +86,10 @@ internal class Gee.ReadOnlyList<G> : Gee.ReadOnlyCollection<G>, List<G> {
 	}
 
 	/**
-	 * Unimplemented method (read only list).
+	 * {@inheritDoc}
 	 */
 	public List<G>? slice (int start, int stop) {
-		assert_not_reached ();
+		return ((Gee.List<G>) _collection).slice (start, stop);
 	}
 
 	/**
@@ -116,7 +116,7 @@ internal class Gee.ReadOnlyList<G> : Gee.ReadOnlyCollection<G>, List<G> {
 	/**
 	 * {@inheritDoc}
 	 */
-	public void sort (CompareFunc? compare = null) {
+	public void sort (owned CompareDataFunc<G>? compare = null) {
 		assert_not_reached ();
 	}
 
@@ -128,31 +128,15 @@ internal class Gee.ReadOnlyList<G> : Gee.ReadOnlyCollection<G>, List<G> {
 	}
 
 
-	private class Iterator<G> : ReadOnlyCollection.Iterator<G>, BidirIterator<G>, ListIterator<G> {
+	protected class Iterator<G> : ReadOnlyCollection.Iterator<G>, ListIterator<G> {
 		public Iterator (ListIterator<G> iterator) {
 			base (iterator);
 		}
 
-		public bool previous () {
-			return ((ListIterator<G>) _iter).previous ();
-		}
-
-		public bool has_previous () {
-			return ((ListIterator<G>) _iter).has_previous ();
-		}
-
-		public bool last () {
-			return ((ListIterator<G>) _iter).last ();
-		}
-
 		public new void set (G item) {
 			assert_not_reached ();
 		}
 
-		public void insert (G item) {
-			assert_not_reached ();
-		}
-
 		public void add (G item) {
 			assert_not_reached ();
 		}