Not to remove, it turns out...

src/mlpack/methods/rann/ra_search_rules.hpp

@@ -270,25 +270,25 @@ class RASearchRules
   //! The instantiated metric.
   MetricType& metric;
 
-  //! Whether to sample at leaves or just use all of it
+  //! Whether to sample at leaves or just use all of it.
   bool sampleAtLeaves;
 
-  //! Whether to do exact computation on the first leaf before any sampling
+  //! Whether to do exact computation on the first leaf before any sampling.
   bool firstLeafExact;
 
-  //! The limit on the largest node that can be approximated by sampling
+  //! The limit on the largest node that can be approximated by sampling.
   size_t singleSampleLimit;
 
-  //! The minimum number of samples required per query
+  //! The minimum number of samples required per query.
   size_t numSamplesReqd;
 
-  //! The number of samples made for every query
+  //! The number of samples made for every query.
   arma::Col<size_t> numSamplesMade;
 
-  //! The sampling ratio
+  //! The sampling ratio.
   double samplingRatio;
 
-  // TO REMOVE: just for testing
+  //! The number of distance calculations performed during search.
   size_t numDistComputations;
 
   //! If the query and reference set are identical, this is true.

src/mlpack/methods/rann/ra_search_rules_impl.hpp

@@ -135,7 +135,6 @@ double RASearchRules<SortPolicy, MetricType, TreeType>::BaseCase(
 
   numSamplesMade[queryIndex]++;
 
-  // TO REMOVE
   numDistComputations++;
 
   return distance;