[libcxx-commits] [libcxx] [libc++] Forward more algorithms to the classic algorithms (PR #114674)

[Nikolas Klauser via libcxx-commits]

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@@ -216,6 +216,9 @@ struct _IterOps<_ClassicAlgPolicy> {
   }
 };
 
+template <class _AlgPolicy, class _Iter>
+using __policy_iter_diff_t = typename _IterOps<_AlgPolicy>::template __difference_type<_Iter>;
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philnik777 wrote:

The problem is that you also have to mention `typename _IterOps<_AlgPolicy>::template __difference_type<_Iter>` in the declaration, which is really not easy to read IMO. FWIW I think we may want to rethink the `iterator_operations.h`, since it's become a quite ugly catch-all of different operations.

https://github.com/llvm/llvm-project/pull/114674