Xcode 26.4 supports handful of new C++ features. refer - [Official Apple C++ language support page](https://developer.apple.com/xcode/cpp/) : items with "Requires Xcode 26.4" - [Xcode 26.4 Release Note](https://developer.apple.com/documentation/xcode-release-notes/xcode-26_4-release-notes) One thing to note is that Apple Clang only partially supports P3372. > constexpr containers and adaptors (forward_list, list, priority_queue, flat_map, and flat_set are implemented) Thank you.
Xcode 26.4 supports handful of new C++ features.
refer
One thing to note is that Apple Clang only partially supports P3372.
Thank you.