renames

cpp/src/lance/io/exec/limit.cc

@@ -50,18 +50,18 @@ ::arrow::Result<ScanBatch> Limit::Next() {
   if (batch.eof()) {
     return batch;
   }
-  // Find intersection of two range (offset, offset + limit) and (seen + batch_size).
-  auto num_rows = batch.batch->num_rows();
+  // Find intersection of two ranges (offset, offset + limit) and (seen, seen + batch_size).
+  auto batch_size = batch.batch->num_rows();
   auto left = std::max(offset_, seen_);
-  auto right = std::min(seen_ + num_rows, offset_ + limit_);
+  auto right = std::min(seen_ + batch_size, offset_ + limit_);
   std::shared_ptr<::arrow::RecordBatch> record_batch;
   if (left < right) {
     record_batch = batch.batch->Slice(left - seen_, right - left);
   } else {
-    /// No interaction, skip the whole batch.
+    /// No intersection, skip the whole batch.
     ARROW_ASSIGN_OR_RAISE(record_batch, ::arrow::RecordBatch::MakeEmpty(batch.batch->schema()));
   }
-  seen_ += num_rows;
+  seen_ += batch_size;
   return ScanBatch{record_batch, batch.batch_id};
 }