From Is std::unique_ptr required to know the full definition of T?, I know that if a class A has a member unique_ptr<T>, then T shall be a complete type in destructor ~A(). However, I came across a situation that the…
In the following code, why is std::make_unique necessary to initialize Foo::up_? Specifically, why doesn't initializing Foo::up_ with new Bar(...) -- as in the commented-out code -- work? #include <iostream> #include <memory> enum E { Y = 0, Z = 1,…
This question is a follow-up to Why doesn't returning a std::unique_ptr violate unique_ptr's deleted copy constructor? (which is answered here: Returning unique_ptr from functions ) This leads me back to the original problem I'd faced. I have to work with…
i'm a bit of a noob when it comes to modern C++. the problem at hand is, that i would like to pass a unique_ptr to a ctor via a variable. everything works nicely, if i pass the unique_ptr directly,…