[libcxx-commits] [libcxx] [libc++] Implement P2077R3 Heterogeneous erasure overloads for associative containers (PR #78277)

[Hristo Hristov via libcxx-commits]

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@@ -1309,6 +1317,12 @@ public:
   _LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __p) { return __tree_.erase(__p.__i_); }
   _LIBCPP_HIDE_FROM_ABI iterator erase(iterator __p) { return __tree_.erase(__p.__i_); }
   _LIBCPP_HIDE_FROM_ABI size_type erase(const key_type& __k) { return __tree_.__erase_unique(__k); }
+#if _LIBCPP_STD_VER >= 23
+  template <typename _K2, enable_if_t<__is_transparent<_Compare, _K2>::value && !(is_convertible_v<_K2&&, iterator> || is_convertible_v<_K2&&, const_iterator>), int> = 0>
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Zingam wrote:

Why not use concepts instead?

https://github.com/llvm/llvm-project/pull/78277