Hi Avi, what you are describing is a factory function. A few months back we were discussing Thomas' and my suggestion of a std::factory or std::construct_modify in the context of NRVO together with a version for free functions.   The only difference was the added possibility to also modify or inspect the returned value freely without copy or move.   P3357 https://github.com/cplusplus/papers/issues/2013   The construct template function would be half of it. -----Ursprüngliche Nachricht----- Von:Avi Kivity via Std-Proposals <std-proposals_at_[hidden]> Gesendet:So 01.12.2024 16:57 Betreff:[std-proposals] std::construct<T> An:std-proposals <std-proposals_at_[hidden]>; CC:Avi Kivity <avi_at_[hidden]>; Functions and member functions are invocable, but constructors are not. I propose to add template <typename T, typename... Args> T std::construct(Args&&... args) {     return T(std::forward<decltype(Args)>(args)...); } With this, we can pass a constructor where other functions can be passed.     // build a callback that creates and returns a Type1 thing     std::function<Type1 (Arg3)> make_somthing = std::bind_front(std::construct<Type1>, arg1, std::ref(arg2));     // transform a vector of ints to a vector of some other type     auto foo = some_container | std::views::transform(std::construct<AnotherType>) | std::ranges::to<std::vector>(); -- Std-Proposals mailing list Std-Proposals_at_[hidden] https://lists.isocpp.org/mailman/listinfo.cgi/std-proposals