From 2791f2930bf9c3b1adc113e7788d79254ecf1a84 Mon Sep 17 00:00:00 2001
From: krunalchande <krunalchande@gmail.com>
Date: Tue, 23 Dec 2014 18:12:24 -0500
Subject: [PATCH] fix return value from key to size_t.

---
 gtsam/linear/VectorValues.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gtsam/linear/VectorValues.h b/gtsam/linear/VectorValues.h
index ce33116ab..a599e7269 100644
--- a/gtsam/linear/VectorValues.h
+++ b/gtsam/linear/VectorValues.h
@@ -135,7 +135,7 @@ namespace gtsam {
     /// @{
 
     /** Number of variables stored. */
-    Key size() const { return values_.size(); }
+    size_t size() const { return values_.size(); }
 
     /** Return the dimension of variable \c j. */
     size_t dim(Key j) const { return at(j).rows(); }