From e037fa1bdbf49a7c07aeb226caaca11e43fa4be5 Mon Sep 17 00:00:00 2001
From: Gerry Chen <gerry.chen2015@gmail.com>
Date: Wed, 1 Dec 2021 16:20:51 -0500
Subject: [PATCH] c++11 doesn't support std::size so use obj.size() instead

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

diff --git a/gtsam/nonlinear/NonlinearFactor.h b/gtsam/nonlinear/NonlinearFactor.h
index 503ae7d58..b87d1bfaa 100644
--- a/gtsam/nonlinear/NonlinearFactor.h
+++ b/gtsam/nonlinear/NonlinearFactor.h
@@ -816,7 +816,7 @@ public:
   template <typename CONTAINER>
   NoiseModelFactorN(const SharedNoiseModel& noiseModel, CONTAINER keys)
       : Base(noiseModel, keys) {
-    assert(std::size(keys) == sizeof...(VALUES));
+    assert(keys.size() == sizeof...(VALUES));
   }
 
   ~NoiseModelFactorN() override {}