From 416111b0efaeba77c7a8263d8b2611ac9acad0a5 Mon Sep 17 00:00:00 2001
From: thduynguyen <thduynguyen@gmail.com>
Date: Fri, 18 Apr 2014 12:19:55 -0400
Subject: [PATCH] size() should return size_t not Key

---
 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 502d9314b..7f7943341 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(); }