From f1bc66c0174b7200426df183426e39bd500f552f Mon Sep 17 00:00:00 2001
From: Yong-Dian Jian <ydjian@gmail.com>
Date: Tue, 4 Sep 2012 15:33:36 +0000
Subject: [PATCH] add back an accidentally deleted function

---
 gtsam/linear/IterativeSolver.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gtsam/linear/IterativeSolver.h b/gtsam/linear/IterativeSolver.h
index 4323d8e55..7946874bb 100644
--- a/gtsam/linear/IterativeSolver.h
+++ b/gtsam/linear/IterativeSolver.h
@@ -68,6 +68,8 @@ namespace gtsam {
 
     /* interface to the nonlinear optimizer  */
     virtual VectorValues optimize () = 0;
+    /* update interface to the nonlinear optimizer  */
+    virtual void replaceFactors(const GaussianFactorGraph::shared_ptr &factorGraph, const double lambda) {}
   };
 
 }