From 8d54086f92a8358dae0bb7cb64cbc78271c1d098 Mon Sep 17 00:00:00 2001
From: Frank Dellaert <dellaert@gmail.com>
Date: Fri, 28 Aug 2009 20:06:29 +0000
Subject: [PATCH] const begin and end

---
 cpp/FGConfig.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cpp/FGConfig.h b/cpp/FGConfig.h
index 221f76309..b6217108a 100644
--- a/cpp/FGConfig.h
+++ b/cpp/FGConfig.h
@@ -52,8 +52,8 @@ namespace gtsam {
     virtual void operator+=(const FGConfig & delta);
     virtual FGConfig operator+(const FGConfig & delta) const;
  
-    const_iterator begin() {return values.begin();}
-    const_iterator end()   {return values.end();}
+    const_iterator begin() const {return values.begin();}
+    const_iterator end()   const {return values.end();}
 
     /** get a vector in the configuration by name */
     Vector get(const std::string& name) const;