[libcxx-commits] [libcxx] [libc++][c++23] P2374: `views::cartesian_product` (PR #111215)

[Hristo Hristov via libcxx-commits]

================
@@ -0,0 +1,477 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___RANGES_CARTESIAN_PRODUCT_VIEW_H
+#define _LIBCPP___RANGES_CARTESIAN_PRODUCT_VIEW_H
+
+#include <__config>
+#include <__iterator/access.h> // begin
+#include <__iterator/default_sentinel.h>
+#include <__iterator/distance.h>
+#include <__iterator/iter_move.h>
+#include <__iterator/next.h>
+#include <__memory/addressof.h>
+#include <__ranges/concepts.h> // forward_range, view, range_size_t, sized_range, ...
+#include <__ranges/zip_view.h> // tuple_transform
+#include <__type_traits/maybe_const.h>
+#include <tuple>       // apply
+#include <type_traits> // common_type_t
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
+
+#if _LIBCPP_STD_VER >= 23
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+namespace ranges {
+
+template <bool Const, class First, class... Vs>
----------------
H-G-Hristov wrote:

```suggestion
template <bool _Const, class First, class... _Vs>
```

Please, uglify everything.

https://github.com/llvm/llvm-project/pull/111215