This is superceded by P3312 [1].


Instead of std::construct<T>(...), write (&T::T)(...).

[1] https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2025/p3312r1.pdf

On Sun, 2024-12-01 at 17:57 +0200, Avi Kivity wrote:
> 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>();