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.venv/Lib/site-packages/pyarrow/include/arrow/util/print.h

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+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License. template <typename T>
+
+#pragma once
+
+#include <tuple>
+
+namespace arrow {
+namespace internal {
+
+namespace detail {
+
+template <typename OStream, typename Tuple, size_t N>
+struct TuplePrinter {
+  static void Print(OStream* os, const Tuple& t) {
+    TuplePrinter<OStream, Tuple, N - 1>::Print(os, t);
+    *os << std::get<N - 1>(t);
+  }
+};
+
+template <typename OStream, typename Tuple>
+struct TuplePrinter<OStream, Tuple, 0> {
+  static void Print(OStream* os, const Tuple& t) {}
+};
+
+}  // namespace detail
+
+// Print elements from a tuple to a stream, in order.
+// Typical use is to pack a bunch of existing values with std::forward_as_tuple()
+// before passing it to this function.
+template <typename OStream, typename... Args>
+void PrintTuple(OStream* os, const std::tuple<Args&...>& tup) {
+  detail::TuplePrinter<OStream, std::tuple<Args&...>, sizeof...(Args)>::Print(os, tup);
+}
+
+}  // namespace internal
+}  // namespace arrow