fix

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/bottleneck_integration@1780 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 9001cd1b33dfea3b34e5d12ef8e20b5624a50ba9

1 files changed, 5 insertions, 6 deletions

diff --git a/src/Bottleneck_distance/concept/Persistence_diagram.h b/src/Bottleneck_distance/concept/Persistence_diagram.h
index 4c69343c..1ab768ba 100644
--- a/src/Bottleneck_distance/concept/Persistence_diagram.h
+++ b/src/Bottleneck_distance/concept/Persistence_diagram.h
@@ -27,23 +27,22 @@ namespace Gudhi {
 
 namespace bottleneck_distance {
 
-/** \brief Concept of persistence diagram point. The double first is the birth of the component and the double second is the death of the component.
+/** \brief Concept of persistence diagram point. get<0>() must return the birth of the component and get<1>() its death.
  *
  * \ingroup bottleneck_distance
  */
 struct Diagram_point{
-    double first;
-    double second;
+    double get<int>();
 };
 
-/** \brief Concept of persistence diagram.
+/** \brief Concept of persistence diagram. It's a range of Diagram_point.
  *
  * \ingroup bottleneck_distance
  */
 struct Persistence_Diagram
 {
-    const_iterator<Diagram_point> cbegin() const;
-    const_iterator<Diagram_point> cend() const;
+    const_iterator<Diagram_point> begin();
+    const_iterator<Diagram_point> end();
 };
 
 }  // namespace bottleneck_distance