From 1d0f87255554d1f9ef120ff6f2ef84d10c721391 Mon Sep 17 00:00:00 2001
From: Frank Dellaert <dellaert@gmail.com>
Date: Thu, 5 Jan 2023 11:52:24 -0800
Subject: [PATCH] Use const &

---
 gtsam/hybrid/HybridConditional.cpp | 6 +++---
 gtsam/hybrid/HybridConditional.h   | 7 ++++---
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/gtsam/hybrid/HybridConditional.cpp b/gtsam/hybrid/HybridConditional.cpp
index 0bfcfec4d..f10a692af 100644
--- a/gtsam/hybrid/HybridConditional.cpp
+++ b/gtsam/hybrid/HybridConditional.cpp
@@ -39,7 +39,7 @@ HybridConditional::HybridConditional(const KeyVector &continuousFrontals,
 
 /* ************************************************************************ */
 HybridConditional::HybridConditional(
-    boost::shared_ptr<GaussianConditional> continuousConditional)
+    const boost::shared_ptr<GaussianConditional> &continuousConditional)
     : HybridConditional(continuousConditional->keys(), {},
                         continuousConditional->nrFrontals()) {
   inner_ = continuousConditional;
@@ -47,7 +47,7 @@ HybridConditional::HybridConditional(
 
 /* ************************************************************************ */
 HybridConditional::HybridConditional(
-    boost::shared_ptr<DiscreteConditional> discreteConditional)
+    const boost::shared_ptr<DiscreteConditional> &discreteConditional)
     : HybridConditional({}, discreteConditional->discreteKeys(),
                         discreteConditional->nrFrontals()) {
   inner_ = discreteConditional;
@@ -55,7 +55,7 @@ HybridConditional::HybridConditional(
 
 /* ************************************************************************ */
 HybridConditional::HybridConditional(
-    boost::shared_ptr<GaussianMixture> gaussianMixture)
+    const boost::shared_ptr<GaussianMixture> &gaussianMixture)
     : BaseFactor(KeyVector(gaussianMixture->keys().begin(),
                            gaussianMixture->keys().begin() +
                                gaussianMixture->nrContinuous()),
diff --git a/gtsam/hybrid/HybridConditional.h b/gtsam/hybrid/HybridConditional.h
index 6c2f4a65b..6199fe7b0 100644
--- a/gtsam/hybrid/HybridConditional.h
+++ b/gtsam/hybrid/HybridConditional.h
@@ -111,7 +111,7 @@ class GTSAM_EXPORT HybridConditional
    * HybridConditional.
    */
   HybridConditional(
-      boost::shared_ptr<GaussianConditional> continuousConditional);
+      const boost::shared_ptr<GaussianConditional>& continuousConditional);
 
   /**
    * @brief Construct a new Hybrid Conditional object
@@ -119,7 +119,8 @@ class GTSAM_EXPORT HybridConditional
    * @param discreteConditional Conditional used to create the
    * HybridConditional.
    */
-  HybridConditional(boost::shared_ptr<DiscreteConditional> discreteConditional);
+  HybridConditional(
+      const boost::shared_ptr<DiscreteConditional>& discreteConditional);
 
   /**
    * @brief Construct a new Hybrid Conditional object
@@ -127,7 +128,7 @@ class GTSAM_EXPORT HybridConditional
    * @param gaussianMixture Gaussian Mixture Conditional used to create the
    * HybridConditional.
    */
-  HybridConditional(boost::shared_ptr<GaussianMixture> gaussianMixture);
+  HybridConditional(const boost::shared_ptr<GaussianMixture>& gaussianMixture);
 
   /// @}
   /// @name Testable