[libgee] Add the implementation for HashSet.foreach

[Maciej Marcin Piechotka <mpiechotka src gnome org>]

commit 9817bcbfffb3321697f585282dbf0adb4c37829a
Author: Maciej Piechotka <uzytkownik2 gmail com>
Date:   Mon Jul 15 19:45:26 2013 +0200

    Add the implementation for HashSet.foreach

 gee/hashset.vala |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/gee/hashset.vala b/gee/hashset.vala
index 65c8f40..b196c58 100644
--- a/gee/hashset.vala
+++ b/gee/hashset.vala
@@ -165,6 +165,20 @@ public class Gee.HashSet<G> : AbstractSet<G> {
                resize ();
        }
 
+       /**
+        * { inheritDoc}
+        */
+       public override bool foreach (ForallFunc f) {
+               for (int i = 0; i < _array_size; i++) {
+                       for (unowned Node<G>? current = _nodes[i]; current != null; current = current.next) {
+                               if (!f (current.key)) {
+                                       return false;
+                               }
+                       }
+               }
+               return true;
+       }
+
        private inline bool remove_helper (G key) {
                Node<G>** node = lookup_node (key);
                if (*node != null) {