X-Git-Url: http://git.polytechnique.org/?a=blobdiff_plain;f=classes%2Fpliteratorutils.php;fp=classes%2Fpliteratorutils.php;h=46e0802e44e7c254d507017a03986b12ec50c44d;hb=9d865d031dc03395c381b8d829052f9775e69c38;hp=eff6edaa6b06832e3ccf154f72611f630b23559f;hpb=e677bc13379b7ad58b161411ce35ba4a13bc54d3;p=platal.git

diff --git a/classes/pliteratorutils.php b/classes/pliteratorutils.php
index eff6eda..46e0802 100644
--- a/classes/pliteratorutils.php
+++ b/classes/pliteratorutils.php
@@ -438,6 +438,11 @@ class PlSubIterator implements PlIterator
         return ($this->source->last() && $this->next == null);
     }
 
+    public function first()
+    {
+        return $this->source->first();
+    }
+
     // Called by a subiterator to "rewind" the core iterator
     public function setNext($item)
     {
@@ -518,6 +523,11 @@ class PlInnerSubIterator implements PlIterator
         return $this->over;
     }
 
+    public function first()
+    {
+        return false;
+    }
+
 }
 
 // Wrapper class for 'arrayValueCallback' (get field $key of the given array)