[GitHub] [arrow] pitrou commented on a diff in pull request #14188: ARROW-17792: [C++] Use lambda capture move construction

[GitBox <gi...@apache.org>]

pitrou commented on code in PR #14188:
URL: https://github.com/apache/arrow/pull/14188#discussion_r977913171


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cpp/src/arrow/dataset/dataset_writer.cc:
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@@ -174,19 +174,9 @@ class DatasetWriterFileQueue {
   }
 
   void ScheduleBatch(std::shared_ptr<RecordBatch> batch) {
-    // TODO(ARROW-17110) This task is only here to std::move the batch
-    // It can be a lambda once we adopt C++14
-    struct WriteTask : public util::AsyncTaskScheduler::Task {
-      WriteTask(DatasetWriterFileQueue* self, std::shared_ptr<RecordBatch> batch)
-          : self(self), batch(std::move(batch)) {}
-      Result<Future<>> operator()(util::AsyncTaskScheduler*) {
-        return self->WriteNext(std::move(batch));
-      }
-      DatasetWriterFileQueue* self;
-      std::shared_ptr<RecordBatch> batch;
-    };
-    scheduler_->AddTask(
-        ::arrow::internal::make_unique<WriteTask>(this, std::move(batch)));
+    scheduler_->AddSimpleTask([self = this, batch = std::move(batch)]() {

Review Comment:
   That's a good question. I think either way is ok.



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