[libcxx-commits] [libcxx] [libc++] P2389R2: `dextents` Index Type Parameter (PR #97393)

[Damien L-G via libcxx-commits]

================
@@ -465,6 +465,12 @@ template <class... _IndexTypes>
 explicit extents(_IndexTypes...) -> extents<size_t, size_t(((void)sizeof(_IndexTypes), dynamic_extent))...>;
 #  endif
 
+#  if _LIBCPP_STD_VER >= 26
+// [mdspan.extents.dims], alias template `dims`
+template <size_t _Rank, class _IndexType = size_t>
+using dims = dextents<_IndexType, _Rank>;
+#  endif
----------------
dalg24 wrote:

I would prefer if we moved it right after the definition of `dextents`, that is L457.

https://github.com/llvm/llvm-project/pull/97393