[libcxx-commits] [libcxx] [libc++] P3168R2 Give std::optional Range Support (PR #146491)

[via libcxx-commits]

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@@ -976,6 +1070,25 @@ public:
   }
 #    endif // _LIBCPP_STD_VER >= 23
 
+// P3168R2
+#    if _LIBCPP_STD_VER >= 26
+
+  _LIBCPP_HIDE_FROM_ABI iterator begin() {
+    if (!this->has_value())
+      return this->end();
+    return iterator(reinterpret_cast<_Tp*>(this->__get()));
+  }
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dywoq wrote:

Will use static_cast then

https://github.com/llvm/llvm-project/pull/146491