[dmitrykoval]

For this particular example direct initialization i.e. std::string product("not worked"); would be preferred, as you end up using one call to constructor instead of two: default constructor followed by the move assignment.

https://en.cppreference.com/w/cpp/language/direct_initializa... https://en.cppreference.com/w/cpp/language/move_assignment

[kleiba]

Thank you very much.

What are examples of situations where the other pattern would be preferable?

[Ticklee]

afaik the only time you are really supposed to use uninitialized values is when you are planning on reading it in from some stream.

otherwise you should really avoid it.