Fixed issue with 'count'

gtsam/nonlinear/Values.h

@@ -387,7 +387,7 @@ namespace gtsam {
 
     // Count values of given type \c ValueType
     template<class ValueType>
-    bool count() const {
+    size_t count() const {
       size_t i = 0;
       for (const auto& key_value : *this) {
         if (dynamic_cast<const GenericValue<ValueType>*>(&key_value.value))

gtsam/nonlinear/tests/testValues.cpp

@@ -384,6 +384,7 @@ TEST(Values, filter) {
   }
   EXPECT_LONGS_EQUAL(2, (long)i);
   EXPECT_LONGS_EQUAL(2, (long)values.count<Pose3>());
+  EXPECT_LONGS_EQUAL(2, (long)values.count<Pose2>());
 
   // construct a values with the view
   Values actualSubValues2(pose_filtered);

gtsam/slam/dataset.cpp

@@ -880,7 +880,7 @@ bool writeBALfromValues(const string& filename, const SfM_data &data,
       }
     } else {
       cout
-          << "writeBALfromValues: different number of cameras in SfM_dataValues (#cameras= "
+          << "writeBALfromValues: different number of cameras in SfM_dataValues (#cameras "
           << dataValues.number_cameras() << ") and values (#cameras "
           << nrPoses << ", #poses " << nrCameras << ")!!"
           << endl;